And, I'm glad you are worried. Whether you are a believer in the US Constitution, a refugee from a war-torn country, living in poverty and trying to raise a family, are ill and unable to work, are pregnant but can't support a child at this time..... all of these people and many more are the objects upon which the red elephant wants to stomp if Donald Trump gets elected President. For people who live in other countries, there's the past proof that Trump does not honor his promises, that he uses politics to cause grief to his allies, that he bullies rather than using diplomacy in his mandates.
But, sadly, he is popular with the people he lies to: He tells big stories about what he will do but he has no ending for them, no strategy to achieve them, no calculations of cost, no calculations of the social cost to his people. He LOVES big business! That's his forte! How did he get there - by using deceit, by not paying debts, by bullying. He's a 'sociopath': Here's an article that describes him https://www.psychologytoday.com/us/blog/5-types-people-who-can-ruin-your-life/201803/how-spot-sociopath-in-3-steps
He uses lies and deceptive ideas to 'feed' his flock of followers who seem to think that he will change the USA (And they are right - but how will he change it?)
After reading a bit about the sociopath idea and how to spot one, think back about the White House aides he hired ("Best man/woman" "I only get the best people to advise me", etc. etc. and then a few months later they are fired and are publicly disgraced by the same man! Why were they fired? Simply for not following through on his erratic ideas. Sure: Tell someone to do something illegal because your immune from prosecution..... that doesn't hold for that person!! So they balk and get fired.
Now... I'll stop there because you are probably more worried than you were before.
Good luck with your survival!!