In the past, the message was, give the hijackers what they want and no one will get hurt.
Of course you can always do better. But compared to Europe, I've found the TSA to be very quick working and quite friendly. I worried a bit after reading so many bad articles, but then wondered that most of them kept smiling and being polite despite their intense work.
This presumes that the TSA keeps bombs out of the plane, which does not seem to be the case.
http://thehill.com/blogs/pundits-blog/homeland-security/2449...
Shoes, belts, and taking the laptop out are the only significant pain point that America has that the rest of the world doesn't. And the shoes thing is a the result of someone walking through security with bombs in his shoe, so it's hard to be too critical.
The reinforcement of cockpit doors and additional sky marshals are what keep that incident list short today.