As stated above, he thinks its ridiculous for EVERYONE, not just him.
Also, he's flying commercial air, is he?
I like that. Some senators use private jets.
Not surprising that Rand Paul gets it.
He was willing to be re-scanned, according to the article I read, in order to clear the "random selection for perp-frisk" buzzer. Team Sexual Assault refused, and stated that they were determined to grope him. He left the checkpoint accompanied by actual LEOs, though not under arrest (IOW, SOP for failure to pass the Nude-O-Scopes and refusal to be groped). Good on him for taking a stand!
Me, I'd be the other way 'round. I'm not going through the Nude-O-Scope, not even the millimeter-wave radar one Paul went through rather than the ionizing-radiation backscatter-xray version that's more common nationally. You get perp-frisked anyways if the machine goes beep for any reason, or if Team Sexual Assault decides they don't like your attitude or whatever - so they can just get it over with out in public right up front, and I'll make it as uncomfortable for them as they do for me. A karate-chop to the testicles will be regarded as assault, and result in an immediate, vocal call for the nearest actual law-enforcement officer, as it should, and complaints will be filed both online and in person as a result of TSA's policies regardless of whether or not the screener plays the "Respect mah authori-TAH!" card, as so many of them sadly seem to do.
Of course, that's only if I absolutely HAVE to fly. I recommend against exposing oneself to such unpleasantness and idiocy as TSA deems "security", myself, unless you simply MUST fly. I'll fly again when we get ACTUAL security in the airports, as opposed to the pointless and counterproductive security theater TSA is foisting on us.