President Donald Trump pledged to "expose" his enemies during a norm-breaking political speech Friday at the Justice Department in which he aired a litany of grievances about the criminal cases he faced and vowed retribution for what he described as the "lies and abuses that have occurred within these walls.

The president, once the target of federal prosecution, says he wants to combat “weaponization” of the department, even as he uses its powers to punish enemies and reward allies.

President Donald Trump excoriated the Justice Department prosecutors who investigated him and vowed to use it to target his own enemies in a campaign-style speech at the department’s historic Great Hall on Friday.