As much as I hate both the partisan screeching and the inane rush to pin blame in the underwear bombing case before we really have any idea what happened, I also confess that I don't understand the (bipartisan! international!) hysteria that's prevented full body screening machines from being put in use on a wider basis. They perform "virtual strip searches that see through your clothing and reveal the size and shape of your body," says the ACLU, and earlier this year the House voted to prohibit their use for primary screening. Both Democrats and Republicans voted for the ban by wide margins.
I'll defer to the experts on how and where these devices are best used, but privacy concerns strike me as daft. Yes, the machines show the shape of your body under your clothes. Big deal. That strikes me as way less intrusive than pat-downs, wands, bomb-sniffing dogs, hand inspections, and no-fly lists. If we put up with that stuff, why on earth would we suddenly draw the line at a full body scanner?
We go nuts whenever a terrorist tries to set off a bomb, but we also go nuts over an effective, noninvasive technology just because it gives TSA screeners a brief glimpse of our body fat level? That's crazy.