JD Vance has said he is ready to take on the presidency “If God forbid, a terrible tragedy happens” to Donald Trump.

In a wide-ranging interview with USA TODAY, the vice president said he was “confident” President Trump would see out the rest of his term, but added he has had a lot of “on-the-job training”.

He also insisted to White House Correspondent Francesca Chambers Trump was in “incredibly good health”, despite recent questions about the president’s physical wellbeing.