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.
Drivers, physicians, and motor vehicle agencies all have some responsibility in reducing the number of fatal traffic accidents caused by driver sleepiness.