Once again Steve Schmidt comes through with some vital information. Looks like the Thamnophis rufipunctatus (Narrow-Headed Garter Snake) is Federally Threatened along with T. e. megalops (Northern Mexican garter snake). They shouldn't be found in the hobby.
Species Profile for Narrow-headed garter snake (Thamnophis rufipunctatus)
http://www.gpo.gov/fdsys/pkg/FR-2014...2014-14615.pdf