The U.S. Justice Department unit charged with defending against legal challenges to signature Trump administration policies - such as restricting birthright citizenship and slashing funding to Harvard University - has lost nearly two-thirds of its staff, according to a list seen by Reuters. Sixty-nine of the roughly 110 lawyers in the Federal Programs Branch have voluntarily left the unit since President Donald Trump's election in November or have announced plans to leave, according to the list compiled by former Justice Department lawyers and reviewed by Reuters.