Supreme Court Issues Landmark Rulings on Birthright Citizenship, Campaign Finance, and Executive Power
In one of the most consequential single-day outputs in its modern history, the Supreme Court on Tuesday issued six major rulings that fundamentally reshape American law on citizenship, campaign finance, executive power, and transgender rights. The decisions, released on June 30, 2026, span issues from birthright citizenship and mailed ballot counting to presidential power over independent agencies and campaign spending limits.
Birthright Citizenship Upheld
The Court blocked President Donald Trump’s executive order to end birthright citizenship in a 6-3 decision, reaffirming that children born in the United States are automatically citizens under the 14th Amendment. Chief Justice John Roberts wrote for a bare majority of five justices on the constitutional question, joined by Justice Amy Coney Barrett and the three liberal justices, according to AP News.
“Citizenship, then and now, was the right to have rights—to freely participate in our political community,” Roberts wrote. “The Framers of the Fourteenth Amendment extended that promise to ‘every free-born person in this land.’ We keep that promise today.”
Justice Brett Kavanaugh sided with the majority based on federal law rather than constitutional grounds, leaving open the possibility that Congress could change the law to restrict birthright citizenship. Justices Samuel Alito, Neil Gorsuch, and Clarence Thomas dissented, with Thomas writing a 91-page dissent more than three times as long as Roberts’ opinion.
More than 250,000 babies born in the U.S. each year would have been affected by the executive order, according to research by the Migration Policy Institute and Pennsylvania State University’s Population Research Institute.
Executive Power Dramatically Expanded
The Court dramatically expanded presidential power in a 6-3 ruling, holding that presidents have free rein to fire agency heads at will, overturning the 1935 precedent of Humphrey’s Executor. Chief Justice Roberts wrote for the majority: “We hold that such protection from removal is contrary to the separation of powers enshrined in the Constitution,” as reported by NBC News.
The decision affects agencies including the Federal Trade Commission, National Labor Relations Board, Merit Systems Protection Board, and Consumer Product Safety Commission. Justice Sonia Sotomayor warned in her dissent that the ruling could lead to “submission, instability, and even oppression.”
“The president, to be sure, emerges with more power than ever before. That power was given to him by six justices on this court, not the people or the Constitution,” Sotomayor said.
However, the Court ruled 5-4 that Federal Reserve Governor Lisa Cook can keep her job for now while she fights Trump’s effort to fire her over mortgage fraud allegations. Roberts wrote that allowing Cook to be ousted now “would allow the President to remove a member of the Federal Reserve at any time, for any reason, without any notice before, and without any judicial check after.”
Campaign Spending Limits Struck Down
The Court struck down limits on how much political parties can spend in coordination with candidates for Congress and president, overturning a federal election law more than 50 years old. Justice Brett Kavanaugh wrote for the 6-3 majority that “constitutional text, history and precedent establish that the political-party coordinated-expenditure limits violate the First Amendment,” according to AP News.
Justice Elena Kagan dissented, saying the court “ushers in untold harm” by enabling parties to funnel large contributions to individual candidates. The Republican committees for House and Senate filed the lawsuit in Ohio in 2022, joined by then-Senator JD Vance. After Trump took office, the Federal Election Commission dropped its defense of the law.
States Can Count Late-Arriving Mailed Ballots
In a 5-4 decision, the Court ruled that states can count mailed ballots that arrive after Election Day, preserving rules in nearly 30 states and handing President Trump a significant defeat. Justice Amy Coney Barrett wrote the majority opinion, joined by Chief Justice Roberts and the three liberal justices, as reported by AP News.
“If varied deadlines for ballot receipt similarly call for a national solution, the American people must choose it through their elected representatives,” Barrett wrote. Justice Samuel Alito dissented, warning the decision “threatens to produce lamentable consequences” and “risks further undermining Americans’ confidence in election integrity.”
Trump called the ruling a “tremendous loss” and renewed calls for Congress to pass the SAVE America Act.
Transgender Athlete Bans Upheld
The Court upheld state laws that bar transgender athletes from participating in girls’ and women’s sports at publicly funded schools in a 6-3 decision. Justice Brett Kavanaugh wrote the majority opinion, ruling that since Title IX explicitly allows sex-segregated athletic teams, states are free to limit team players to their sex at birth, as reported by NPR. The ruling covered two cases: one from Idaho and one from West Virginia involving a middle school student.
Twenty-seven states have barred trans women and girls from participating in girls’ sports. The decision follows last year’s ruling upholding state bans on gender-affirming care for minors.
Analysis: A Transformative Day for American Law
The rulings represent a fundamental shift in the balance of power between the presidency and independent agencies, potentially undermining the non-partisan character of regulatory bodies, according to AP News. The campaign finance decision continues the trajectory set by Citizens United in 2010, potentially increasing the influence of money in politics ahead of the 2026 midterm elections.
Combined with last year’s ruling on gender-affirming care, the trans athlete decision signals a broader conservative shift on transgender rights at the Supreme Court level, as NPR reported. Meanwhile, the birthright citizenship ruling blocks Trump’s executive order immediately, though Kavanaugh’s concurrence on statutory grounds leaves open the possibility of congressional action.
What to Watch For
Key questions remain as the nation digests these sweeping decisions. Will Congress attempt to legislate on birthright citizenship following Kavanaugh’s invitation? How will Trump exercise his new power to fire independent agency heads? Will he succeed in removing Lisa Cook from the Federal Reserve Board? And what will be the impact of unlimited party-candidate coordinated spending on the 2026 midterms, as AP News noted?
The rulings come ahead of the 2026 midterm congressional elections, with the Court’s conservative super-majority largely ruling in Trump’s favor, with notable exceptions on birthright citizenship and mailed ballots.