The order is just the latest in several legal battles against Trump's ban on trans troops.
In a two-paragraph order, the three-judge panel of the Richmond-based 4th U.S. Circuit Court of Appeals said that it is denying the administration's request to delay the Jan. 1 deadline, without further explanation, reported the Hill.
Four lawsuits were filed against the ban, and so far, judges in three of them have said the ban cannot take effect while the cases work their way through the courts. The judge in the fourth has not yet ruled, the report said.
Outlining how the military will process transgender recruits, the Pentagon issued a memo on December 8, specifying what documents will be accepted to prove gender identity and which underwear they will be required to wear.