A class-action lawsuit is challenging the Trump administration's attempt to halt the diversity visa lottery program, which has left thousands in limbo. The lawsuit seeks to determine the future of at least 1,622 people from 72 countries awaiting interviews before their round ends on Sept. 30. The decision comes after the administration suspended the program in December after learning that the Brown University shooter had initially entered the country through the lottery. The plaintiffs have filed a lawsuit challenging the suspension and the failure to administer some visas.