“only people with a right to travel”
Being able to enter the secured area of an airport to board a commercial flight isn’t quite the same as having a right to travel.
You can still board a train, bus, drive a car, take a boat, or charter a flight at a small airport without a TSA screening, so you have plenty of other means of travel that are unaffected by this.
Also, we have other cases where you must voluntarily submit to some kind of search in order to enter the premises that are similar, for example, entering a court building or a public school. Nobody argues that you are losing your right to participate in the judicial process or receive an education because they ask you to submit to a screening before you enter. In the case of the courts, there aren’t even any other alternative venues you could choose to patronize instead if you want to exercise your rights.
So do we have to let people stroll into court with firearms in order not to risk endangering their fourth amendment rights?
Sadly, you and too many others have bought into the idea that rights are granted by the government to be recinded at their will. I've come to the conclusion that some people are just plain averse to the concept of liberty.
"If ye love wealth better than liberty, the tranquility of servitude better than the animating contest of freedom, go home from us in peace. We ask not your counsels or your arms. Crouch down and lick the hands which feed you. May your chains set lightly upon you, and may posterity forget that ye were our countrymen."
- Samuel Adams, quoted in "Citizen's Rule Book", Whitten Printers, Phoenix AZ