These laws will only be punishable after Antifa was officially recognized as a terrorist organization that threatens the government of the US. If support is continued after such a designation is made, then they are guilty of aiding and abetting a terrorist organization.  There may be something else at work here as well. Many are going to start severing ties with Antifa pretty quick to cover their own butts. They realize that connections are enough to cause many to have their ties examined very closely. A great pretext for looking into all kinds of dealings. It will be interesting to see where it all leads and what is turned up. Moving Antifa from the classification of a political organization to a terrorist group is huge.  I am sure there is a lot of bleach bitting, hammer smashing, paper shredding and burning going on right now. But oops, too late - we have it all. The problem is usually never the actual crimes committed, but the coverup that follows.