Nor does spouting your opinion of it being illegal. As many have posted, this is common practice and well established as legal.
Never said it was illegal, I was just spouting (or blathering, wailing, whining, pick your smear) that your arguments weren't very convincing. Your first point is simply descriptive: 'well, some employees steal, so there's a good reason for bag checks'. This doesn't defend unpaid time for bag checks (legally or ethically) and the existence of bag checks isn't what's being disputed here.