President Trump put Attorney General Jeff Sessions back in his political crosshairs on Wednesday, blasting him for tapping an “Obama guy” to investigate allegations of government surveillance abuse. The president was reacting to Sessions revealing a day earlier that the Justice Department’s inspector general will investigate the allegations, in light of memos released on Capitol Hill about FBI and DOJ efforts to obtain FISA warrants to spy on a former Trump campaign adviser. “Why is A.G. Jeff Sessions asking the Inspector General to investigate potentially massive FISA abuse. Will take forever, has no prosecutorial power and already late with reports...