I flew out of DCA a couple of months ago and they didn’t even check my liquids I carried on board. On the way back, both security personnel at EZE and JFK checked them, but the ones at DCA are always talking about stuff and not paying attention.
Are You Living in a Constitution Free Zone?
I don’t like the ACLU but here is an interesting article.
http://www.aclu.org/national-security_technology-and-liberty/are-you-living-constitution-free-zone
I recently took a folding knife with a 4-inch blade through security undetected. It was an accident by me - it was in my carry-on - which was x-rayed - and I didn’t realize it was in there until I got home and unpacked. Whoops.