Trump had brief encounter with Giuliani on Saturday

President TrumpDonald TrumpMcCabe wins back full FBI pension after being fired under Trump Biden's Supreme Court reform study panel notes 'considerable' risks to court expansion Bennie Thompson not ruling out subpoenaing Trump MORE briefly met with his attorney Rudy GiulianiRudy GiulianiBook Trump signed for Giuliani fetches K at auction: 'I promise never to run against you' Judge: Request for Tucker Carlson personnel files is 'intrusive' White House orders release of Trump records to Jan. 6 committee MORE on Saturday as Giuliani faces a federal investigation over possible campaign finance violations, Bloomberg News reported.

The two men met Saturday night at Trump's Mar-a-Lago resort in West Palm Beach, Fla., where Trump spent the weekend ahead of this week's Christmas holiday. It was unclear what the two men discussed, according to Bloomberg. The White House did not immediately return a request for comment from The Hill.

A communications aide to Giuliani, Christianné Allen, tweeted a picture of herself next to a smiling Trump on Sunday morning, hours after the meeting occurred.

Giuliani also remains under investigation for possibly failing to register as a foreign agent, the same charge that ensnared other members of Trump's inner circle, including Paul ManafortPaul John ManafortDOJ investigating one-time Trump campaign adviser over alleged ties to Qatar: report Foreign lobbyists donated over M during 2020 election: report Former Mueller prosecutor representing Donoghue in congressional probes: report MORE, his former campaign chairman.

The former New York City mayor has been at the center of the House's impeachment inquiry into Trump due to his efforts in Ukraine to uncover possibly damaging information on former Vice President Joe BidenJoe BidenMcAuliffe holds slim lead over Youngkin in Fox News poll Biden signs bill to raise debt ceiling On The Money — Progressives play hard ball on Biden budget plan MORE, a top contender for the Democratic Party's 2020 nomination.

Trump's and Giuliani's efforts to convince Ukrainian officials, including the country's new president, Volodymyr Zelensky, to open criminal investigations into Biden ahead of the 2020 election have been characterized by critics as an attempt to solicit foreign interference in a U.S. election.