U.S President Trump has confirmed he will use emergency powers to build a wall on the US border with Mexico, saying "walls work".

Building the wall was a key pledge of Trump's campaign, but Democrats have described the move as a "gross abuse of power".

He is due to sign the plan along with a spending bill aimed at preventing a repeat of a recent government shutdown.

He announced the plan after Congress refused to pay for a wall in the bill.

Senior Democrats immediately said that they would challenge the move in the courts.

The declaration will give Trump access to billions of dollars for his project.

[Source: BBC]