In his first rally since the release of Robert Mueller's report to the US attorney general William Barr, Donald Trump has given a 90-minute diatribe against the media and the US Democratic party, claiming he had been 'totally exonerated' after an investigation he described as the 'single greatest hoax in the history of politics in this country'. He also spoke on several other issues critical to his Michiganian audience, including the car industry and preservation programmes for the Great Lakes