Mental Illness Discrimination

If a young man volunteers to go into an inpatient care facility for his mental illness, after recovering in that facility is it still possible to have a fair chance at getting a job in a branch of the government? this man already graduated with 4yr in criminology.

This man has no arrests and its an overall good person in society. Basiclly does going to an inpatient facility for the mentally ill make it harder to get a job in government?

If so what would a psychologists opinion be for this man to seek help at an inpatient and ruin possible career, or stay in career and just see therapists and psychologists?