Considering that certain persons wish to secede from the US and make their States do so as well these individuals should be placed on No-Fly lists and treated as potential domestic terrorists.
They have revealed themselves as harboring ill will towards the United States of America and while many are no doubt harmless (as they are lazy and ignorant) some among them are a danger to both the President and the country.
Amongst those signers could be the next Timothy McVeigh so we must act accordingly for protection