Taking a leaf out of the President’s book, Bernie Sanders has taken to twitter to vent his frustrations with Donald Trump.

The Democrat, who lost the nomination to Hillary Clinton, tweeted: “We have a President who either lies intentionally or, even more frighteningly, does not know the difference between lies and truth.”

Mr Sanders, who is the US's longest serving Senator, added: “I strongly believe in civil political discourse. But how does one respond to a President who has complete disregard for reality?”