Earlier quoted context omitted.
If the government is requiring the property owner to submit to TSA, that's a public act and not a private one, which means it is bound by the bill of rights and most importantly the 4th 5th and maybe even 6th amendment. The government cannot punish you for exercising your rights by refusing you to move forward into the private place you could otherwise lawfully go. If you can't go to the employee area, that's because…
What are you talking about? The government can absolutely pass laws prohibiting you from entering a privately owned location. There is no constitutional right of access to private property. And more specifically, the commerce clause of the constitution allows the government to regulate air travel, which means regulating airports. The fact that they're privately owned doesn't change anything. If a private airport owne…
If the difference between access and not having access is relinquishing your civil rights, then the reason for denial is exercising your civil rights. Those are explicitly protected. So while you're right they could make a law that says 'no one on the plane' they cannot make a law that says "everyone on the plane except those who won't give up their 4th or 5th amendment rights not to answer additional questions."
There have been prior SCOTUS cases narrowly allowing asking name, DOB, addresses, as well as inspection of your items during certain inspections, but this is something entirely different beyond that asking further probing questions about your identity.
And that brings us back to the tagline of the article:
The law, as written, is clear: You have the right to fly without ID, without paying a $45 fee, and without answering questions
The TSA is violating the law, and the constitution, and making it up as they go.