Notable cases
Garland is considered a judicial moderate and a centrist. Garland has been described by Nina Totenberg and Carrie Johnson of NPR as "a moderate liberal, with a definite pro-prosecution bent in criminal cases". Tom Goldstein, the publisher of SCOTUSblog, wrote in 2010 that "Judge Garland's record demonstrates that he is essentially the model, neutral judge. His opinions avoid unnecessary, sweeping pronouncements." Garland has a reputation for collegiality and his opinions rarely draw a dissent. As of 2016, Garland had written just fifteen dissents in his two decades on the court, fewer than his colleague Brett Kavanaugh, who wrote some 17 dissents over the previous decade.
Garland has tended to favor deference to regulatory agencies. For example, in In re Aiken County (2013), Garland dissented when the court issued mandamus ordering the Nuclear Regulatory Commission to process the Yucca Mountain nuclear waste repository license. In Americans for Safe Access v. Drug Enforcement Administration (2013), Garland joined a divided court upholding the DEA's classification of marijuana as a Schedule I drug. However, according to Goldstein, in a number of split decisions on environmental law Garland "favored contested EPA regulations and actions when challenged by industry, and in other cases he has accepted challenges brought by environmental groups." In Rancho Viejo, LLC v. Norton (2003), Garland found the arroyo toad was protected by the federal Endangered Species Act. Circuit Judge John Roberts dissented from the denial of rehearing en banc, writing that Congress's interstate commerce power cannot reach "a hapless toad that, for reasons of its own, lives its entire life in California."
While on the bench, Garland has shown a tendency to be deferential to the government in criminal cases, siding with prosecutors in ten of the fourteen criminal cases in which he disagreed with a colleague. For example, in United States v. Watson (1999), Garland dissented when the court concluded a prosecutor's closing argument was unduly prejudicial, objecting that a conviction should be reversed for only "the most egregious of these kind of errors." In 2007, Garland dissented when the en banc D.C. Circuit reversed the conviction of a Washington, D.C. police officer who had accepted bribes in an FBI sting operation.
Garland has taken a broad view of whistleblower protection laws, such as the False Claims Act (FCA), which creates a private cause of action against those defrauding the federal government. For example, in United States ex rel. Yesudian v. Howard University (1998), Garland wrote for the court in holding that a plaintiff alleging he had been fired by Howard University for whistleblowing could sue under the FCA for retaliation. In United States ex rel. Totten v. Bombardier Corp. (2004), Garland dissented when the court, in an opinion written by Judge John Roberts, held that the FCA did not apply to false claims submitted to Amtrak because Amtrak is not the government. Roberts justified his narrow reading by citing a book by circuit judge Henry Friendly. In dissent, Garland (who like Roberts had clerked for Friendly), cited Friendly's book as supporting the use of legislative intent, writing that Roberts was relying on "'canons' of statutory construction, which serve there as 'cannons' of statutory destruction." Garland's dissent, expressing concerns that the court's ruling would impede the government's ability to pursue false claims cases against federal grantees, is credited with sparking the Fraud Enforcement and Recovery Act of 2009, which eliminated the loophole. During confirmation hearings in 2005, Senator Chuck Grassley sharply questioned Roberts on why he had not adopted Garland's reading. Roberts replied, "Any time Judge Garland disagrees, you know you're in a difficult area."
During Garland's tenure, the D.C. Circuit reviewed cases arising from the Guantanamo Bay detention camp. In al Odah v. United States (2003), a panel that included Garland unanimously held that federal courts could not hear challenges from Guantanamo detainees. In July 2011, Garland wrote for the unanimous panel when it rejected Guantanamo detainee Moath Hamza Ahmed al Alawi's petition for habeas corpus. In Parhat v. Gates (2008), Garland wrote for a panel that unanimously overturned the Combatant Status Review Tribunal's determination that a captured Uyghur was an enemy combatant. In Saleh v. Titan Corp. (2009), Garland dissented from the court's holding that former Iraqi detainees at Abu Ghraib prison could not sue private military contractors who participated in torture and prisoner abuse. Garland wrote that the suit should be allowed to proceed because "no act of Congress and no judicial precedent" immunized the contractors from tort liability, the Federal Tort Claims Act specifically excludes contractors, and tort liability would not interfere with government operations.
According to Goldstein, Garland has "tended to take a broader view" of First Amendment rights. In cases involving the Freedom of Information Act and similar provisions related to government transparency, "Judge Garland's rulings reflect a preference for open government." In ACLU v. CIA (2013), Garland wrote for a panel unanimously rejecting the agency's Glomar response and ordering it to process the ACLU's FOIA request regarding targeted killings by CIA drones. In Cause of Action v. FTC (2015), Garland wrote for a panel unanimously overturning the agency's limitation on FOIA fee waivers to large news outlets.
In Lee v. Department of Justice (2005), Garland dissented from the denial of rehearing en banc after the D.C. Circuit affirmed the district court's order holding reporters in contempt of court for refusing to testify about their anonymous sources during the Wen Ho Lee investigation. Garland wrote that the panel had erred in failing to "weigh the public interest in protecting the reporter's sources against the private interest in compelling disclosure" and that the decision "undermined the Founders' intention to protect the press 'so that it could bare the secrets of government and inform the people.'" In Initiative & Referendum Institute v. U.S. Postal Service (2005), Garland wrote for the court, holding that a U.S. Postal Service regulation banning signature-gathering for petitions at post offices violated the First Amendment. Garland found the regulation to be facially overbroad and not narrowly tailored.
In cases involving campaign finance reform laws, Garland has applied Citizens United v. Federal Election Commission when he believed that he was compelled to do so, but he has not sought to extend its holding. In Wagner v. Federal Election Commission (2015), Garland wrote for the unanimous en banc D.C. Circuit in upholding a prohibition on campaign contributions from federal contractors because of the governmental interest in preventing corruption. In National Association of Manufacturers v. Taylor (2009), Garland wrote for the court in a decision upholding the constitutionality of lobbyist disclosure requirements under the Honest Leadership and Open Government Act. Professor Rick Hasen, an election-law expert, writes that Garland's opinions on election law are characterized by careful application of precedent and indicate that Garland believes in reasonable regulation.
Garland has addressed a number of religious freedom cases while on the D.C. Circuit, although several of these have been decided on procedural grounds. In 2002, Garland joined a unanimous court in ruling for two federal prisoners who were denied the right to consume communion wine. In 2010, Garland wrote the decision for a unanimous court in favor of an Interior Department employee who brought a religious-discrimination claim after the Interior Department refused to allow her to work weekdays rather than Sunday, when she wished to attend church and Bible study.
In 2007, Garland voted in favor of en banc review of the D.C. Circuit's panel decision in Parker v. District of Columbia invalidating the D.C. handgun ban. The Supreme Court subsequently affirmed this invalidation 5–4 in an opinion by Justice Scalia.
In Alexander v. Daley (2003), Garland joined a decision (authored by Judge Colleen Kollar-Kotelly), rejecting a challenge brought by District of Columbia residents seeking D.C. congressional voting rights.
In Hutchins v. District of Columbia (1999), Garland concurred with four other D.C. Circuit judges (en banc) that D.C.'s Juvenile Curfew Act of 1995 implicated at least some significant right of minors. He joined parts of a plurality opinion written by Judge Laurence Silberman that upheld the juvenile curfew under intermediate scrutiny and a vagueness challenge. Garland also joined the part of Judge Judith W. Rogers's opinion (concurring in part and dissenting in part) holding that a fundamental right to intrastate travel exists.