Accessed Feb 15, 2019. Truthout: The last time the US wanted a wall 70,000 were sterilized.As Dorothy Roberts notes in Killing the Black Body: In four Indian Health Service hospitals alone, doctors performed more than 3,000 sterilizations without adequate consent between 1973 and 1976. For small Indian tribes, this policy was literally genocidal. One physician reported that: all the pureblood women of the Kaw tribe of Oklahoma have now been sterilized. At the end of the generation the tribe will cease to exist.