They need to go after all of them, including 0bama, to show that no one is above the law. The ways they have gone after Trump should leave no doubt that they will not be shown any leniency.
“They need to ‘go after’ all of them”
If you think Obama is going to be convicted without live testimony from a senior official you are crazy.
If you think Clapper, Brennan, or Rice are going to give up Obama without immunity you are crazier.