Washington: A US Senator has called the White House "an adult day care centre" after President Trump attacked him in a morning Twitter tirade.

Trump alleged in a trio of tweets on Sunday that Senator Bob Corker, the Republican chairman of the Foreign Relations Committee, "begged" him for his endorsement, did not receive it and decided to retire because he "didn't have the guts" to run for re-election next year.

In response, Corker tweeted, "It's a shame the White House has become an adult day care centre. Someone obviously missed their shift this morning."

In an interview with the New York Times, Corker went on to warn that Trump risks setting the nation "on the path to World War Three".