As if the outcome was ever in doubt. From the Washington Post:

A federal judge on Thursday upheld the District’s tough gun registration laws, finding that regulations crafted in response to a landmark Supreme Court decision “pass constitutional scrutiny.”

“The people of this city, acting through their elected representatives, have sought to combat gun violence and promote public safety. The court finds that they have done so in a constitutionally permissible manner,” U.S. District Judge James E. Boasberg wrote in an opinion likely to be appealed by gun-rights advocates.