The federal judge who ruled against Donald Trump’s deportation plans and is now facing White House calls for his impeachment is no stranger to politically fraught cases — including ones involving the president. In his 14 years on the federal bench, James “Jeb” Boasberg has resolved secret grand jury disputes that arose during the special counsel investigation into Trump, demanded improvements after the Trump-Russia investigation in how the Justice Department conducts national security surveillance and handled his share of sentencings for rioters who stormed the U.S. Capitol on Jan. 6, 2021.