Border wall

In April 2019, the U.S. House of Representatives requested that McFadden issue a preliminary injunction against the Trump administration's plan to divert about $6 billion from military construction and counter-drug appropriations to build a wall along the U.S.–Mexico border, arguing that the Trump administration's action violated the Constitution's Appropriations Clause.^[11][12] In June 2019, McFadden ruled that the House lacked standing to challenge the administration's diversion of funding and therefore dismissed the suit for lack of jurisdiction. This ruling contradicted the 2015 ruling of the U.S. District Court for the District of Columbia in U.S. House of Representatives v. Azar, in which the court found that then-Republican-controlled House of Representatives had standing in a lawsuit against President Obama's Affordable Care Act.^[13] In September 2020, the U.S. Court of Appeals for the D.C. Circuit overturned McFadden's decision and reinstated the House's lawsuit. Citing the McGahn case, the appellate court held that a single chamber of Congress has "standing to pursue litigation against the Executive for injury to its legislative rights"; the court also criticized the Trump administration's argument that "the Executive Branch can freely spend Treasury funds as it wishes unless and until a veto-proof majority of both houses of Congress forbids it" as a position that "turns the constitutional order upside down."^[12][14]

Trump tax returns

Congressman Richard Neal, chairman of the House Ways and Means Committee, has litigated to obtain Trump's tax returns, but McFadden has ruled other matters should be litigated prior to any such release. Trump's attorneys moved to dismiss the case, arguing congressional investigatory power is nonexistent. Should McFadden rule for the committee's request, Trump's attorneys claim further that Neal's proffered legislative purpose—oversight of mandatory presidential tax audits—is merely a pretext for securing and publicizing Trump's IRS 1040s forms.^[15]

In December 2021, McFadden dismissed Committee on Ways & Means v. U.S. Department of the Treasury and Trump, a suit brought before him in July 2019 in which the Committee sought the tax returns of then-president Trump. McFadden ruled that Trump was "wrong on the law" and that Congress is due "great deference" in its inquiries, allowing the tax returns to be released to the Committee. He granted a 14-day delay in the release of the returns to allow the parties to negotiate terms of the release, or for Trump to appeal to the DC Circuit Court of Appeals.^[16]

Steele dossier

McFadden was assigned to rule on a subpoena hearing in a case regarding a Russian businessman named in the Steele dossier who sued BuzzFeed News for libel for publishing the dossier. Fusion GPS, the research firm which had commissioned the dossier and to whom the subpoenas have been issued, requested that McFadden step down from the case for potential conflict of interest. Fusion GPS alleges that McFadden's connections to Trump—a $1,000 donation to Trump's 2016 campaign, some volunteer work performed by McFadden on Trump's transition team vetting potential Cabinet nominees, and the fact that Trump nominated McFadden to the bench—are grounds for dismissal. McFadden denied the recusal request. McFadden wrote that he has little to no actual connection to the President, who is not a party to the lawsuit but has political interest in the suit, and has never even met the President. McFadden ruled "The President's connection with me and his interest in this case are simply too tenuous to cause a reasonable observer to question my impartiality." Hofstra University law professor James Sample, an authority on the subject of recusal, said that while he found some of the McFadden's contentions "curious," recusal did not appear to be required.^[17][18][19]

January 6 Capitol attack

In February 2021, McFadden received widespread media attention when he approved a uncontested travel request by Jenny Cudd, who faced two misdemeanor charges in connection with the 2021 storming of the United States Capitol and wanted to travel to Mexico for a "weekend retreat with her employees".^[20][21][22] Subsequent to Cudd's filing of her travel request, she was indicted on five federal counts, including one felony, relating to her alleged activities during the January 6, 2021, storming of the United States Capitol.^[23] Following Cudd's conviction, Judge McFadden removed weapons restrictions from her probation conditions, agreeing it was not "reasonably related" to her crime and she may a firearm for own self-defense in the face of harassment she had endured following her conviction.^[24]

McFadden also received national media attention for suggesting that the January 6 Capitol rioters were being treated more harshly than the rioters in the 2020 Black Lives Matter protests. "The US Attorney's Office would have more credibility if it was even-handed in its concern about riots and mobs in the city," said McFadden during sentencing for one of the Capitol rioters.^[23] He later became the first judge to issue an outright acquittal of an accused January 6 rioter who had breached the Capitol grounds, concluding that the defendant "reasonably believed the [Capitol police] officers allowed him into the Capitol."^[25][26] McFadden sentenced another January 6 protester to 52 months imprisonment for having seized a police baton from an officer and used it to strike two other officers.^[27]

Vaccination

In March 2022, Judge McFadden blocked a DC rule which would allow minors to elect to be vaccinated without parental consent, concluding that it violated the parents' religious liberty. In his opinion, Judge McFadden described the minors involved in the case as behaving in "classic teenager fashion" by seeking to be vaccinated notwithstanding their parents' disapproval.^[28][29]