Lock your car when you leave it. Not all Americans are friendly.
Prepare your own music. Radio stations... "Vary" with plenty of commercials and a lot of people who don't know much.
If you speak to someone and you have an accent, prepare to answer a lot of dumb questions. Questions where you'd probably be like, "Did this person even go to school?!"
Stay out of political discussion at all costs, especially now, where everyone is ready to murder each other.
Beware road rage.
