The Nevada statute regarding prostitution requires that condoms must be worn during any sex act involving the penis.
NAC 441A.805 Use of latex or polyurethane prophylactic required. (NRS 441A.120)
1. A person employed as a sex worker shall require each patron to wear and use a latex or polyurethane prophylactic while the patron is engaging in any form of sexual intercourse involving the insertion of the penis into the vagina, anus or mouth of the sex worker, oral-genital contact or any touching of the sexual organs or other intimate parts of a person. https://www.leg.state.nv.us/NAC/NAC-441A.html#NAC441ASec800