If I may use a quote for that, I think somebody once said that the Communist wakes up early in the morning to further their cause, so we must wake up even earlier.
Before they even intrude on our sovereignty, on our democracy, we have to find a policy to basically tell them that they can't do that, or even just a show of force that we are not weak on this and that we will take action if they attempt to interfere in our elections or our democratic institutions.