Americans are always invaded places. Often it doesn't turn out so well. Like in Vietnam. Or Iraq. But they never seem to learn.
It's not only the US military who have a raging boner for invasion. When UK band The Big Pink played Atlanta, Georgia, a local 'fan' decided to invade the stage (admittedly, he was somewhat encouraged). Just like in Vietnam and Iraq, the local insurgency (in this case the lead singer) bopped him on the nosebridge. Fair play - what did he expect:
BTW, there's a http://www.viceland.com/wp/2010/11/big-pink-party-tonight/.