If I write one of my representatives it would be to suggest that all people are screened using Pre Check standards as a starting point. Conventional WTMD's and X-ray of carry on items is adequate for 99.999% of all travelers. If an individual alarms then address that situation.
Pre Check is a sucker bet if there ever was one.
One pays to be trusted but TSA doesn't honor that agreement or even offer the service all the time. If people would stop carrying water for TSA then TSA would be forced to either extend the program to everyone or relax regular screening.
Don't forget the whole purpose of TSA's Pre Check was to reduce the screeners workload.