[cylinder]

Yes, it was going on before Trump, but now they feel empowered with free reign to mess with whomever they want.

US citizens: don't cower to the bullies. No reason not to be polite, but in the face of aggression, remember you have the right to enter the US at all times by showing your passport. It's not their business what you were doing overseas, don't incriminate yourself and give them reasons to accuse you of lying to them (a crime). Do not answer questions if taken for further screening. Do understand they may seize your phone and laptop if you don't unlock for them.