Trump 'looking at' firing ambassador to Greece: 'We're not happy'

President Donald Trump is "looking at" firing U.S. Ambassador to Greece Kimberly Guilfoyle after mounting reports alleging improper conduct before and during her tenure in Athens.

"Well, we’re looking at it," Trump told reporters at the White House before leaving for an Ohio campaign rally Monday afternoon. "Yeah, we’re not happy."

Trump’s comments came after a senior U.S. official said Trump and Secretary of State Marco Rubio were "extremely pissed off" by reports about Guilfoyle’s...