Violent crime in Indian Country is more than twice the national average. On some reservations it is twenty (20) times the national average. An astounding 30 percent of Indian and Alaska Native women will be raped in their lifetimes. Tribal nations are disproportionately affected by violent crime and sex offenses in particular from both Indian and non-Indian perpetrators; consequently, the conduct and presence of convicted sex offenders in Indian Country threatens the political integrity, economic security, health and welfare of tribal nations even to the point of imperiling the subsistence of tribal communities.