Mentally ill persons unable to exercise their voting rights shall not do so after confirmation of their cases by an election committee.

精神病患者不能行使选举权利的，经选举委员会确认，不行使选举权利。

youdao

It closed the country to criminals, the mentally ill,and persons who could not support themselves.

VOA: special.2010.05.20

In 1993, Congress passed the Brady Handgun Violence Protection Act, which created a national background-check system and a list of people forbidden to own a gun: felons, the mentally ill, persons who committed a domestic-violence misdemeanor, drug addicts and the dishonorably discharged.

WSJ: Henninger: Obama's Colossal Politics