"Levying war against the United States, or
Adhering to their enemies, giving them aid and comfort"

Importing millions of people that are diametrically opposed to the American way of life and aim to destroy fundamental protections of rights in the constitution are treasons acts. Treason is not a political ideology. Aiding and comforting our enemies is also taking place. Again. Treason is not a political ideology.

Too slow is a completely valid response. It's the basis for emergency declarations, war powers, executive orders, emergency legislation.