Native women in the U.S. face some of the highest levels of violence of any group. The Justice Department says acts of sexual assault against Native American women are most frequently committed by non-Indian men, who are generally immune to prosecution in tribal courts. Congress reauthorized the Violence Against Women Act last year, which gave tribal courts jurisdiction over certain domestic violence crimes committed by non-Indians. But advocates say acts of sexual violence on Indian reservations are still falling through the cracks. NewsHour Weekend's Stephen Fee reports.