I actually find security screening in the USA to be an absolute pleasure compared to Australia.
I can quite happily put my bag through the machine with a laptop, iPad and 2 bottles vodka and not receive even a sideways glance. I then walk through the scanner with my hat on my head and jacket on, never once beep (nor get forced through the nude-o-scope) and receive a courteous "thank you sir" as I walk away.
Is this post a wind up?
Was in the USA at the start of this year. Every single terminal (domestic/international) I went through was the same routine. Shoes off, jacket off, belt off. Even small bottles of water either had to be emptied or completely discarded before going through the check point (forcing you to buy a rip off US$4 bottle of water from one of the airport cafes.
Australia's airports were such a welcome breeze to come home to. So friendly and smooth flowing in comparison.