Trump: why isn't "beleaguered" Sessions going after Hillary?

President Trump made an other shot at his attorney general Jeff Sessions on Twitter Monday morning, openly asking why he hasn't gone after Hillary Clinton yet.

Background: Trump told The New York Times last week that Sessions' decision to recuse himself from the Russia investigation was "very unfair to the president" and that if he'd known he was going to recuse himself he would have selected someone else as his AG.