No. There is no domestic terrorism law. That's why domestic terrorist groups operating within our borders are declared "criminal enterprises." No law allows you to legally define a group within the US a terror group. We can only declare foreign groups, not on US soil, terrorist groups. He might be able to approach it from the perspective that since Antifa is a global group, they're a global terror group. We'll see what happens. But this was the roadblock.

EDIT: And as far as I know, Congress isn't needed for groups to be added to the US list of terror groups. I think it falls under US Dept State, but maybe someone else can chime in.

No. There is no domestic terrorism law. That's why domestic terrorist groups operating within our borders are declared "criminal enterprises." No law allows you to legally define a group within the US a terror group. We can only declare foreign groups, not on US soil, terrorist groups. He might be able to approach it from the perspective that since Antifa is a global group, they're a global terror group. We'll see what happens. But this was the roadblock.