In 1995, Canby held that the
Tenth Amendment was not violated by provisions of the
Brady Handgun Violence Prevention Act that required local and state law enforcement officials to conduct background checks of handgun buyers. The Supreme Court reversed in
Printz v. United States. In 2001, Canby wrote a unanimous panel decision holding that the
Americans with Disabilities Act required the
Professional Golfers Association to allow disabled golfer
Casey Martin to use a golf cart when competing. The opinion was affirmed by the Supreme Court in
PGA Tour, Inc. v. Martin. On February 4, 2017, Canby and Judge
Michelle T. Friedland rejected the
Trump administration's request for an administrative stay pending the Ninth Circuit's review of an emergency motion to stay the district court's temporary restraining order in
State of Washington v. Trump, part of the ongoing court cases related to
Executive Order 13769. On February 7 Canby, Friedland, and Judge
Richard Clifton heard oral arguments on the emergency motion to stay, with an audio feed of the telephonic argument broadcast nationwide. On February 9, the three judges denied the request for a stay of the temporary restraining order. On February 19, 2025, Canby was one of three judges to reject the Trump administration's request for a stay of an injunction blocking its attempt to end birthright citizenship. == See also ==