'Why is a Fox News conspiracy theory popping up on here?': Chuck Todd erupts in furious exchange...

The host of one of America’s leading political shows angrily interrupted a Republican senator who ignored his questions and instead embarked on a rant about conspiracy theories known to be close to Donald Trump’s heart.

Chuck Todd, anchor of NBC’s Meet the the Press, had asked Wisconsin senator Ron Johnson about the Ukraine whistleblower scandal that has led to an impeachment investigation against the president.

Mr Johnson, a member of the Senate foreign affairs committee, almost immediately started talking about former FBI agents Peter Strzok and Lisa Page. Mr Strzok was removed from the Mueller inquiry into Russian interference in the 2016 election after it emerged he had sent messages critical of Mr Trump to Ms Page, with whom he was having an affair.