Rude, long wait, long walk, dumb/drunk/high tourists. TSA would treat you like crap and nitpick for EVERY SINGLE THING. I had a water stain on my passport, and I've been travelling in and out of my state and the country with it for 3 years with no problem - up until at McCarran. But I didn't even argue back, I took out another ID - one that indicates I'm here on a work visa, and he looks at me up and down and keep turning my ID left and right while mumbling something and rolling his eyes.
Some people I talked to got check bags for dumb things to, the smallest of thing.
This place is horrible and I can't wait to leave.