Donald Trump is on Monday expected to request an extra $8.6 billion (£6.6 billion) to fund his border wall with Mexico, setting the scene for another showdown with Democrats as he continues to attempt to fulfill his signature campaign pledge.

The US president will reportedly ask Congress for the extra money when he unveils his 2020 federal budget blueprint.

If approved, the money would be in addition to the $8 billion he has already secured, in part, by declaring a national emergency on the border.

According to the Washington Post, the president is seeking $5 billion in funding for the Department of Homeland Security to continue building sections of the structure and another $3.6 billion for the Defence Department’s military construction budget.

Funds would also be allocated to hire more than 2,800 law enforcement and support personnel for the agencies, and 100 immigration judge teams.