From a December news story,concerning the Supreme Court taking up the Texas issue:
The Texas "homosexual conduct" law makes it a crime to engage in "deviate sexual intercourse" -- defined as oral and anal sex -- with another person of the same sex.
"The Texas "homosexual conduct" law makes it a crime to engage in "deviate sexual intercourse" -- defined as oral and anal sex -- with another person of the same sex."
Exactly why it can be attacked.. it discriminates on the basis of gender.