The Fourth Amendment to the Constitution explicitly protects the people from unreasonable searches.
"The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."
One might say that you submit to this as part of the deal to get on the plane. But if that were true, it would be between you and the airline, not the government. That means it really should be the airlines that decide how intrusive searches should be. And you would be free to choose an airline whose policies you agree with. And the airline would be free to reject you as a passenger.
The government has hijacked the relationship between you and the people you've hired to get you from point A to point B. Just because of previous lapses in their intelligence efforts enabled some people to do something terrible doesn't mean you lose your rights.
The Fourth Amendment only protects you if you aren't inside the "constitution free zone". And as it happens, about two thirds of the US population live within this zone.
The only good news in all of this is that it won't be too long before they've consumed every available resource and will have to cut back on the drugs that are making them act this way.
This is true (and SFO in San Francisco does not use the TSA). However, even the 5 private agencies airports may choose to use must follow the exact same procedures set by the TSA.
So, while the TSA may not write the paychecks for those airport screeners, they do set the rules.
"The right of the people to be secure in their persons, houses, papers, and effects, against unreasonable searches and seizures, shall not be violated and no Warrants shall issue, but upon probable cause, supported by Oath or affirmation, and particularly describing the place to be searched, and the persons or things to be seized."
One might say that you submit to this as part of the deal to get on the plane. But if that were true, it would be between you and the airline, not the government. That means it really should be the airlines that decide how intrusive searches should be. And you would be free to choose an airline whose policies you agree with. And the airline would be free to reject you as a passenger.
The government has hijacked the relationship between you and the people you've hired to get you from point A to point B. Just because of previous lapses in their intelligence efforts enabled some people to do something terrible doesn't mean you lose your rights.