Melbourne Copper down

Reuters

London copper was on Friday set to drop more than 2 percent for the week, with striking union members agreeing to return to work at the world´s top copper mine, in Chile.

In the short term, investors were jittery on prospects that President Donald Trump´s healthcare bill would not pass, suggesting he may not be able to muster the backing needed to push through fiscal measures central to the government´s economic agenda.

"There was a lot of exuberance at the start of the year about President Trump´s pro-growth policies and certainly base metals benefitted from that," said analyst Daniel Hynes at ANZ in Sydney.

"Certainly the talk around the Trump care vote today and obviously the implications for other policies like tax cuts are probably enough to push investors to the sidelines."

"At the moment there is no fear of a lack of supply even though we have massive supply side issues across the board."