In a free country at war, perhaps you do.
No. Not unless you're on probation for some crime or otherwise restricted by law.
But, nobody is saying this guy cannot travel or does not have a right to travel. He is being told he cannot use certain modes of travel unless he conforms and submits to certain reasonable screening requirements. He's an idiot.
Can you show me a copy of those "reasonable screening requirements"?
I won't hold my breath. The statists wouldn't even produce them for a retired congresswoman.