At DCA I have had plainclothes TSA try to enter the employee elevator without ID displayed claiming they left it in the crew room. Promptly told them to get off the elevator and call their supervisor to come escort them. That was when he pulled out his TSA ID made a flip comment - you pass - then walked off the elevator.
What a crock of shieet Wanna save the budget? Eliminate the TSA and bring back private contractors but require better training oversight and hiring qualifications. There was/is no need for it to be a ginormous Govt agency that it has become.