Well, how did that work? The "TSA" was in place and the panty bomber happened. So if they are THAT ineffective, why not have them out on the tarmac checking packages, maybe they'd find one. What good is something that "doesn't work?" (And if you say it wasn't the TSA's fault, because they weren't at the checkpoint in Europe, then your logic of using the Panty Bomber as an example is illogical, TSA had nothing to do with that one.
Best they be looking for Muslim-Middle-East young men and women and spending the time checking them THOROUGHLY. Go with the odds, what percentage of these jerks are Islamic? All of them ... so that's where the "search time" should be spent. When you go fishing, if you want to catch fish, you don't just throw a line into "any" water (swimming pools?) you throw your line in where the fish are!
When did the TSA get authority in other countries?