Fwiw, the President can't just "declare" that a group is a domestic terrorist organization. That's a violation of the Fifth Amendment.
We've been able to get away with declaring foreign groups as terrorist organizations because they're not based in America so the government can claim the Constitution doesn't apply to them.
Of course, we all also know this won't stop Trump...
That's stupid, that could cut the stock market by a percent or two!
What kind of motion would rather have a better life instead of seeing numbers arbitrarily go up?!