Trump urges appeals court to deny LGBT workers protections.

WASHINGTON, DC - MARCH 29: U.S. President Donald Trump (L) and Attorney General Jeff Sessions (R) attend a panel discussion on an opioid and drug abuse in the Roosevelt Room of the White House March 29, 2017 in Washington, DC. (Photo by Shawn Thew-Pool/Getty Images)

The Trump administration on Tuesday will urge a U.S. appeals court in Manhattan to rule that federal law does not ban discrimination against gay employees.

The U.S. Department of Justice is supporting a New York skydiving company, Altitude Express Inc, in a lawsuit brought by former instructor Donald Zarda, who accused the company of firing him after he told a customer he was gay and she complained.