Obama's debt to Trump in the current president's mind? That the U.S. Supreme Court ruled last year that presidents have immunity for official acts.

A spokesman for former President Barack Obama issued on Tuesday a rare rebuke of President Trump, calling Mr. Trump’s pledge to use the Justice Department to go after his predecessor for treason “ridiculous and a weak attempt at distraction.”

Hours after Trump falsely accused Obama of trying to rig the 2016 election, the ex-president’s office said it had no choice but to publicly refute the claim.