TSA is already doing this at bus stations: http://www.shtfplan.com/headline-news/the-new-greyhound-metal-detectors-scanners-pat-downs-introduced-at-bus-terminals_12022010
This reads as setting up bus station facilities at which, possibly, gropes might be carried out in the future if a bomb threat appears.
They’re going to have to staff them first to make the gropes an ongoing practice, however. This is something that the GOP House is unlikely to give in on.