They'll brand the DSA and socialists like Hasan as terrorists first. Then once they have purged the country of leftist leadership and leftist organizations then they will come for left leaning groups like NPR if and only if NPR refuses to bend the knee.
Morning Joe from MSNBC has already bent the knee. More will follow once Trump makes an example out of his critics.
Hasan is already a terrorist sympathizer, he'll be called a terrorist and then suddenly agree with his critics that he isn't really involved in politics lol
Keeping your eye on the ball...suppose Schumer did bring the House bill to the floor. Suppose also, that by some quirk it passed. How long do you think it would take Biden to Veto it? I'd say 30 seconds max.