It's semantics, but given that we're explicitly talking SFO, the security staff are not actually TSA, but instead CAS (Covenant Aviation Security).
Originally Posted by
Often1
TSA doesn't police lounge rules and could care less whether you really do have lounge access or like the T1 water coolers better.
No, but in some airports they do enforce the airport rules that you can only enter a terminal that you're ticketed for (or one that is connected air-side to it). Thankfully SFO isn't one of those airports.