United Auto Workers union endorses Joe Biden for president

UAW formally backs president's re-election campaign after both Biden and Donald Trump courted the powerful group

The powerful United Auto Workers (UAW) formally endorsed Joe Biden's re-election campaign on Wednesday at the union's national community action program conference in Washington DC.

Both the US president and rival Donald Trump have courted the union and supported its successful strike action against the US's big three automakers last year. Biden became the first president to walk a picket line in support of the union.