The US Supreme Court has ruled that any relationship between consenting adults is legal, and that any laws against the same are unconstitutional. (2003, Lawrence v Texas) This applied in this case to homosexuality, but the Supreme Court's ruling didn't limit the interpretation.
No politician wants to be the one who says "I propose a bill to make adultery legal. It's not an issue for the courts."
There have been less that a dozen misdemeanor prosecutions in the last half century in those 21 states combined.
So yes, in those states, it's illegal. Unconstitutionally so. Just as in many cases, so was homosexuality, and anal sex.
No politician wants to be the one who says "I propose a bill to make adultery legal. It's not an issue for the courts." There have been less that a dozen misdemeanor prosecutions in the last half century in those 21 states combined. So yes, in those states, it's illegal. Unconstitutionally so. Just as in many cases, so was homosexuality, and anal sex.