The "No Repeat Child Sex Offenders Act" amends Title 18 of the U.S. Code to increase penalties for sex trafficking and related offenses involving minors, including transportation, exploitation, and sexual abuse. It raises the punishment for these crimes to include the possibility of the death penalty or life imprisonment, eliminating previous maximum or minimum terms of imprisonment. The bill also targets individuals who facilitate travel for illicit sexual conduct involving a minor for commercial gain, subjecting them to similar penalties. Finally, it increases the punishment for selling children to include the possibility of the death penalty.