Trump vows to 'bring back Main Street' by cutting business tax to 15%

President says US is being 'taken to the cleaners' by rivals and issues blunt demand for Democrats to support his reforms

Donald Trump has vowed to cut the US business tax rate to 15%, in a speech otherwise short on specifics but heavy on "America first" rhetoric.

Addressing workers in Springfield, Missouri, the US president - who is yet to release his own tax returns - sought to take up the mantle of Ronald Reagan, the last president to oversee a major tax reduction, even though he has sharply criticised Reagan's measures in the past.

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