Congress, when passing a law, can't anticipate and prescribe what to do in every possible case or scenario. That implementation detail is the role of the execu

Congress, when passing a law, can't anticipate and prescribe what to do in every possible case or scenario. That implementation detail is the role of the executive branch, with oversight by the courts. That's already played out with the successful litigation on the original blanket ban by MIT and Harvard. Of course Congress can always step in and explicitly amend the law, or refuse to fund the executive's implementation.