Actually a number of states still prohibit homosexualy relations. Here in Texas a gay couple conspired to try to get it struck down in the courts (rather than appeal to legislators to change it). They set up a goofy deal where they had sex with the front door unlocked, the neighbor called 911 to report the sounds of "an assault" going on next door, and police entered to see a homosexual act in progress and dutifully cited the men as being in violation of the law. The judge didn't buy it.
Funny thing is that even though homosexual acts are outlawed, the city of Houston tried to extend "same-sex partner" benefits to city workers. Seems to me that they are approving of law-breakers. Same with the school programs to teach about homosexuality. They are educating future law-breakers on the techniques.