Using planes as weapons only works once. In fact it didn't even entirely succeed as the plane that was downed by the passengers proves. Any future attempt would be foiled by passengers, on board air marshals, or by locked/reinforced cockpit doors.
So just drop the BS screenings and get back to having our personal liberties and rights to not be exposed to unreasonably searches.
Use some of that money for intelligent solutions. If you're spending money on airport screening, you've already missed the point. It's like defending at point blank range, you need to get the bad guys before they are trying to execute their plan. No matter how hard you try, there will be gaps in the system that will be exploited due to real world and the human factor. The bad guys won't come through the obvious front door where all the security is.
Kill it and save the money for making new jobs and improving the standard of living for those that hate us. If anything human beings are lazy and if you give them enough luxury, they will just sit around on the couch and complain rather than actually taking action :P