Washington Alliance of Technology Workers v. Department of Homeland Security

(1) Whether the statutory terms defining nonimmigrant visas in 8 U.S.C. § 1101(a)(15) are mere threshold entry requirements that cease to apply once a noncitizen is admitted, or whether they persist and dictate the terms of a noncitizen"s stay in the United States; and (2) whether, when Congress has enacted a statutory scheme governing a class of noncitizens in the Immigration and Nationality Act, the Department of Homeland Security"s power to extend employment authorization to that class of noncitizens through regulation is limited to implementing the terms of that statutory scheme.