There are only two ways to stop this:

1.) Block it locally through local government. If your public servants aren't patriots, replace them NOW.

2.)...We all know what 2 is, I don't need to say it but if comes down to that then it had better be done as soon as it's rolling out before they perfect their checkpoints and turn them into traps for pissed off Americans behind on the learning curve. I would expect hidden snipers, fortified positions with crew serviced weapons, and likely support from backup forces... likely airborne. You do remember these Army Brigade Combat Teams?

I think 1 shouldn't be ignored any longer, right?