Couldn't a suicide bomber still carry an ID? It's not like they're afraid of being monitored in the future.
Again this is the 'do nothing because we can't be 100% perfect with everything' argument. There are 2 people. One has his ID checked, the other does not. Are you trying to argue that they both have the same chance of being caught if they are up to no good? You do not think the ID check just might provide a tiny little eensy weensy chance to catch someone vs doing nothing at all? What if there is no ID, it is found to be forged, the name is on a wanted list, it is expired, etc, etc, ad infinitum.
It is not the solution, but we must do everything we can.
Bingo. That IDs somehow deter terrorism is a popular delusion. They forget Atta et al had IDs.
'tis a Leftist mindset that enough conversation (and showing & approving an ID amounts to a conversation), all evil can be averted. Terrifying how the delusion is infecting the Right.