Yea, it IS a crime in the US, and it IS prosecuted in the US even if the act occurred overseas:
http://www.justice.gov/criminal/ceos...x-tourism.html
http://www.justice.gov/criminal/ceos...x-tourism.html
I know of a number of cases in CA where people have been prosecuted for engaging in sexual tourism. A single guy traveling to southeast Asia with a "guide," well, that's the M.O.

