Americans Championed Mujahideen-e-Khalq (MEK) . Why?

James Bovard, Counterpunch, March 09 2020:… Bush officials and subsequent administration chose to champion the Iranian terrorist group, Mujahideen-e-Khalq (MEK). That organization sprang up in the 1960s and proceeded to kill Americans in the 1970s and to kill large numbers of Iranians in the subsequent decades. A 2004 FBI report noted that MEK continued to be “actively involved in planning and executing acts of terrorism.” NBC News reported in early 2012 that MEK carried out killings of Iranian nuclear scientists and that it “financed, trained and armed by Israel’s secret service.” Americans Championed Mujahideen-e-Khalq (MEK) . Why?