State laws prohibiting sodomy were on the books throughout US history until struck down by the US Supreme Court, which argued in Lawrence v Texas (2003) that the state cannot criminalize private sexual conduct.
People with mental illness or a degenerative mental disease have special protections under the law when entering into contracts or other binding documents.
It is unconstitutional--and unethical--for physicians to participate in evidence-gathering against pregnant women suspected of being addicted to illegal substances without informing them of their constitutional rights or gaining their informed consent.