2.9 - Independent Judiciaries
Judicial independence, the degree to which courts can act without interference from other branches, depends on several institutional features that together determine whether judges base decisions on law or on political pressure.
Authority to Overrule Other Branches
How much authority courts have to overrule the executive and legislature is a direct indicator of independence. Strong judicial review lets courts strike down laws and executive actions as unconstitutional, examine legislation against constitutional standards, and serve as the ultimate arbiter of constitutional meaning. Before the 2024 judicial reform, Mexico's Supreme Court struck down several of AMLO's initiatives to expand executive control over the energy sector, and the UK Supreme Court's authority grew significantly after the Human Rights Act (1998) and its establishment as a separate institution in 2009, culminating in its ruling against Johnson's prorogation of Parliament in 2019.
By contrast, limited or absent judicial review means courts can't meaningfully challenge other branches: legislatures or executives interpret the constitution themselves, and courts just implement political decisions. China's courts can't overrule Communist Party or NPC decisions, since the NPC Standing Committee interprets the constitution, and Russia's Constitutional Court theoretically has review power but never actually rules against core government interests, upholding controversial laws expanding presidential authority every time.
Even where formal review power exists, how often and forcefully courts actually use it matters. Assertive courts regularly review and sometimes overturn government actions, while deferential courts rarely challenge other branches even with the authority to do so. Nigeria's Supreme Court has judicial review authority but uses it cautiously, often deferring to executive and legislative preferences despite its formal power.
Appointment Process
How judicial officials get their jobs profoundly affects independence, since it determines who judges feel they owe loyalty to. Executive-dominated appointment, where the president or PM selects judges with minimal external input, reduces independence since judges get chosen for loyalty and feel indebted to whoever appointed them. Russia's judges are nominated by the president and confirmed by a Federation Council that United Russia controls, ensuring loyalty to the regime, and Iran's Supreme Leader appoints the head of judiciary, who then appoints lower judges in a top-down religious process that ensures loyalty to the Supreme Leader rather than independence.
Legislative confirmation requirements increase independence by requiring consensus between branches, preventing unilateral court-packing, and forcing nomination of broadly acceptable candidates. Under the system the CED describes (used until 2025), Mexico's Supreme Court magistrates needed Senate approval by a two-thirds vote, forcing presidents to nominate candidates acceptable to the opposition, and Nigeria's judges go through a multi-step process of National Judicial Council recommendation, presidential appointment, and Senate confirmation, producing more independent judges than pure executive appointment would.
Independent commissions maximize independence through merit-based selection that prioritizes legal expertise over political connections. The UK's Judicial Appointments Commission independently selects judges based on qualifications, with the Prime Minister's role reduced to a largely ceremonial recommendation, producing highly independent judges with no political debts.
Some systems elect judges directly, which makes them accountable to voters but can compromise independence by forcing consideration of political popularity, campaign support, and partisan pressures. Mexico is now the course-country example: since the 2024 judicial reform, voters elect federal judges, including the nine Supreme Court justices, first chosen in June 2025. Supporters argue this gives judges democratic legitimacy and breaks up insider networks in the courts. Critics point to turnout of about 13% and to lists handed out in some places telling voters which candidates to pick, and argue that judges who must win elections will be slower to rule against the party in power. The other five course countries don't hold popular elections for judges.
Length of Judicial Terms
Longer terms provide more insulation from political pressure. Life tenure or very long terms maximize independence since judges don't need to worry about reappointment and can make unpopular decisions without career consequences. UK Supreme Court justices serve until mandatory retirement at 75, and Mexico's Supreme Court magistrates served 15-year terms under the system the CED describes (the 2024 reform changed this to a single 12-year term), both providing significant insulation from political pressure.
Renewable short terms reduce independence, since judges seeking reappointment have an incentive to avoid angering whoever controls renewal, creating self-censorship. Independence is also enhanced when judicial terms don't align with political cycles, so judges outlast any single government, and reduced when terms do align, making judges dependent on the administration that appointed them. Nigeria's judges serve until mandatory retirement at 70, meaning they outlast multiple presidential administrations, providing some independence even though the appointment process still creates dependence at the start.
Professional and Academic Background Requirements
Rigorous professional requirements enhance independence by prioritizing legal expertise, giving judges a professional identity separate from politics, and creating peer accountability based on legal reasoning rather than political loyalty. UK judges need extensive experience as barristers or solicitors and typically serve on lower courts first. Mexico's justices must hold law degrees, and since the 2024 reform they also need a grade average of at least 8 out of 10 (9 in subjects related to the job) and at least five years of legal practice (the old rules required them to be at least 35 and to have held a law degree for at least 10 years).
Minimal or politicized requirements reduce independence, prioritizing political loyalty over legal expertise and leaving judges without a professional identity separate from politics. Russian judges must have law degrees and legal experience on paper, but many are recruited from court staff, prosecutors' offices, and law enforcement, and they rarely rule against the state: acquittals happen in well under 1% of criminal cases. Iran requires judges be trained in Islamic Sharia law, which creates professional standards of a sort but also ensures the judiciary serves the religious regime.
Removal Processes
How judges can be removed determines independence: difficult removal protects it, easy removal creates vulnerability. Removal only for cause, requiring serious misconduct and a high threshold like a supermajority, maximizes independence since judges can't be removed for unpopular decisions. In Nigeria, most judges can be removed only on the recommendation of the National Judicial Council for misconduct or inability to do the job, not for the content of their rulings, and removing the Chief Justice takes the president acting with a two-thirds vote of the Senate. That protection was tested in January 2019, when President Buhari suspended Chief Justice Walter Onnoghen over undeclared bank accounts without going through the Senate, weeks before a presidential election the courts might have to settle, and critics called it an attack on judicial independence. Mexico's justices can be impeached for serious violations, and since 2025 an elected Judicial Discipline Tribunal can also suspend or remove judges, which critics worry could be used against judges whose rulings the government dislikes.
Discretionary removal, where the executive or legislature can remove judges without cause, reduces independence and creates self-censorship out of fear. In authoritarian systems, judges can be removed, reassigned, or pressured through extra-legal means; Chinese judges who rule against party interests face career consequences that ensure judicial subservience. In general, difficult removal processes requiring supermajorities and proof of serious misconduct mean greater independence, while easy, discretionary removal on vague grounds means less.
Putting the factors together, Mexico (as of 2026): the 2024 judicial reform changed nearly every factor at once. Authority to overrule: a second 2024 amendment stopped courts from reviewing constitutional amendments. Selection: from presidential nomination and Senate approval to popular election. Term length: from 15 years to a single 12-year term. Background: new grade and experience rules replaced the old age and degree rules. Removal: an elected Judicial Discipline Tribunal can now suspend or remove judges. Supporters see a more accountable judiciary, and critics see a less independent one.
Why Independent Judiciaries Strengthen Democracy
Independent judiciaries are essential for democratic governance, serving several functions that protect against authoritarianism and abuse of power.
Maintaining checks and balances: independent courts prevent power from concentrating by checking both the executive and legislative branches. Courts can strike down executive orders exceeding constitutional authority, invalidate regulations, and review agency decisions, meaning executives can't act with unlimited discretion. Before the 2024 reforms, Mexico's Supreme Court blocked AMLO's actions on energy policy and National Guard militarization, and the UK Supreme Court's prorogation ruling preserved legislative power against executive overreach. Courts can also declare laws unconstitutional and check legislative majorities from trampling minorities, meaning legislatures can't just pass anything they want. In China and Russia, by contrast, legislatures face no meaningful judicial check, so power concentrates without institutional balance.
Protecting rights and liberties: independent courts safeguard individual and minority rights against government infringement and majority tyranny by enforcing constitutional guarantees like free speech, due process, equal protection, religious freedom, and property rights, even when a government or majority wants to restrict them. UK courts have used the Human Rights Act to protect individuals against privacy violations and discrimination. Courts also protect unpopular groups, ethnic and religious minorities, political dissidents, LGBTQ+ individuals, and anyone vulnerable to majority oppression, since democratic majorities can otherwise oppress minorities without a check. Without independent courts, as in Russia and China, minority rights depend entirely on majority goodwill, leaving groups like Uyghurs, Chechens, and dissidents without legal recourse.
Establishing rule of law: independent courts ensure law governs rather than arbitrary power, creating predictability and equality before the law. This means government itself must follow legal rules and officials can't act outside their legal authority; UK courts have ruled against the government in immigration and security cases, establishing that law constrains power. China's rule by law approach, by contrast, means the party operates above the law since there's no independent court to enforce limits on government. Rule of law also requires laws applied consistently and predictably, and equal treatment for the powerful and the powerless alike; when UK courts can convict ministers just like ordinary defendants, that demonstrates equality before the law, whereas Russian courts prosecute opposition figures while protecting regime-connected elites for identical behavior, showing an absence of real rule of law.
Maintaining separation of powers: independent courts preserve the constitutional division of authority between branches and levels of government, preventing the executive from usurping legislative functions or vice versa. In federal systems, courts also resolve disputes between national and subnational governments, like Nigeria's Supreme Court settling disputes between the federal government and states over resources and taxation, or the UK Supreme Court ruling on devolution disputes. Independent courts also preserve constitutional stability by requiring formal amendment processes for constitutional change rather than letting political actors just ignore limits, whereas without independent enforcement, as in Russia, constitutional guarantees can become essentially meaningless.
Altogether, independent judiciaries strengthen democracy by preventing authoritarian concentration of power, protecting democratic participation like speech and assembly rights, ensuring accountability beyond elections, building legitimacy through fair courts, and enabling peaceful resolution of conflict. Without judicial independence, executives accumulate unchecked power, rights protections become hollow, and rule of law deteriorates into arbitrary rule. Comparing the course countries shows this correlation clearly: the UK's highly independent judiciary supports a strong democracy, Mexico and Nigeria's developing independence supports imperfect but functioning democracies, Russia and China's subservient judiciaries support authoritarianism, and Iran's judiciary, independent from elected officials but subordinate to religious authority, supports a theocratic form of authoritarianism.
Even independent judiciaries face real limits, though: they can't enforce their own rulings and depend on executive cooperation and public compliance, and they require a political culture that respects judicial authority in the first place, something that takes time to build. Judicial independence is necessary but not sufficient for democracy; it has to be paired with other democratic institutions and a broader commitment to constitutional governance. This is exactly why authoritarian regimes consistently undermine courts, while democratic transitions typically include judicial reforms that strengthen independence.