Yep, I hate going to the USA. Well, more like coming back to Canada. Going to the US, the guards are quite friendly.
I usually make a trip to the border to pick up hay in bulk for my rabbit. Coming back, they would ask me the most ridiculous questions. Once I was stuck there for 4hrs, as they believed I was a pedophile, due to my pedobear sticker. They believed that sticker was used as a form of communication between other pedos. They searched my car, they confiscated my laptop for a 2months while "searching" for kiddy porn and made me drive all the way back to get my laptop back.
Lesson? They cannot take a joke, and they violated my rights. And some of these fellows are rather power hungry.