Don't make threats against presidential candidates. An Egyptian student living in the US is being deported after posting on Facebook, “I am willing to kill Donald Trump and serve a life sentence. The whole world would thank me for doing that."
In fact, don't make threats against anyone. When you have been given a visa to live in another country, you are a guest of that country and should behave the same way you would if you were a guest in someone's home. You treat your hosts (and their family and friends) with respect. You follow their way of doing things, even if it's different from the way you prefer. I know there are Americans who act like assholes when they're abroad - they need to learn manners too.
According to another source, he had been studying at a flight school, the Universal Air Academy. They say his deportation is because the US is paranoid about terrorism.