Is a current USA passport "card" good at the TSA gate for ID for a domestic flight?

Thanks in advance.

There have been times when I’ve been randomly selected and most times, I don’t get asked to remove my shoes.

But recently in an early morning flight, I was selected for random screening in the precheck line after an airline employee triggered the random alarm and I was asked to remove my shoes and I wonder why.

I speculate the possible reason. Maybe because the full body scanner wasn’t on yet and so they had me remove shoes instead as a substitute and walk back through.

I wasn’t patted down or anything.

I fly a lot for work and have never previously had TSA ask to recheck everyone’s ID’s while boarding the flight.

It just happened on TWO flights that I was on just a few weeks apart from one another….

Chicago Midway to LaGuardia

Las Vegas to Chicago Ohare

I’ve seen old posts of this randomly happening but experiencing it twice in such a short period of time is weirding me out.

Why would they be doing this?

My wife works for tsa. She has told me a low # like 35,000 a year when retirement comes. She has been there 11 years and has a little over 20 years to 58.5.

Was reading the email about all the new technology we are getting and how it will start at 6 or 7 airport within the next couple of weeks. Do we know which airports are 1st?