Trump news - live: President ridiculed over Colorado border wall claim after Republican mob storms impeachment inquiry

Donald Trump has made the bizarre claim that his administration is building a border wall in Colorado during an address at a shale gas conference in Pittsburgh, Pennsylvania, despite the mountainous state being entirely landlocked, a gaffe he subsequently attempted to spin as a joke on Twitter as the ridicule rained down.

The president also lied with an anecdote about witnesses being reduced to tears by the sight of him signing an executive order - quickly disproved by video evidence of the event in question - mocked hostile demonstrators and urged his audience to demand he serve a further 16 years in office, treating an official White House event as a campaign rally.

Mr Trump was speaking after an extraordinary day on Capitol Hill in which he announced an agreement with Turkey to make its Syria ceasefire "permanent" in exchange for the lifting of sanctions as a mob of Republican congressmen caused a five-hour delay to the impeachment inquiry by protesting during the deposition of senior State Department official Laura Cooper.