London Mayor Boris Johnson Slams President Obama's 'Brexit' Position

He cites the "part-Kenyan president’s ancestral dislike of the British empire."

"For the United States to tell us in the U.K. that we must surrender control of so much of our democracy – it is a breathtaking example of the principle of do-as-I-say-but-not-as-I-do," Johnson goes on to say in the op-ed. "It is incoherent. It is inconsistent, and yes it is downright hypocritical. The Americans would never contemplate anything like the E.U., for themselves or for their neighbors in their own hemisphere. Why should they think it right for us?"

The United Kingdom is set to vote June 23 on a referendum, referred to as “Brexit," on whether to remain a member of the E.U.

Obama later defended his decision to address the matter in a news conference alongside British Prime Minister David Cameron, saying the upcoming vote was "a matter of deep concern to the United States," but that he wasn't "coming here to fix any votes."

"In democracies everyone should want more information, not less," Obama said. "That's not a threat, it should enhance the debate."

While Obama said his position didn't represent a threat, he did suggest that if Britain were to exit the E.U., the U.K. could be placed "in the back of the queue" in terms of negotiating future trade deals with the United States.

As for the bust of Churchill, the White House has previously sought to debunk the claim that Obama had it removed from the Oval Office, calling it "100 percent false."

The president also addressed the matter today in the joint news conference, explaining that it was placed outside his private office in the White House residence, known as the Treaty Room, where he sees it “every day, including on the weekends.” Also, Obama said, as the first African-American president, he thought it was appropriate to put Martin Luther King Jr.'s bust in the Oval Office.

In his op-ed, Obama implored the British people to recognize that their membership in the E.U. is in Britain and the United States’ best interest.

“The European Union doesn’t moderate British influence – it magnifies it,” Obama writes. “A strong Europe is not a threat to Britain’s global leadership; it enhances Britain’s global leadership.

“The United States sees how your powerful voice in Europe ensures that Europe takes a strong stance in the world, and keeps the E.U. open, outward looking, and closely linked to its allies on the other side of the Atlantic. So the U.S. and the world need your outsized influence to continue – including within Europe.”

London’s mayor is not alone in criticizing the president for his stance on the issue, with the British satirical magazine The Spectator running a photo portraying Obama as royalty under the headline “Obama’s Brexit overreach is typical of his arrogance.”

Nigel Farage, the leader of the U.K. Independence Party and a leading advocate for separating from the E.U., has labeled Obama “the most anti-British American president” in history and has published an op-ed in Breitbart calling the president out for his perceived hypocrisy, arguing that the United States would never tolerate an equivalent partnership to the E.U.

“Let’s get real; would any American President seriously open up their borders unconditionally to Mexico as the U.K. has done to the whole of the EU? No chance,” Farage writes.