President Donald Trump brought his hard-line economic nationalism to a summit of Pacific Rim leaders here Friday, issuing a stern rebuke of trade practices that have harmed American workers. But the President also continued to insist his US predecessors are to blame.

"We are not going to let the United States be taken advantage of anymore," Trump said in a speech at the start of the Asia-Pacific Economic Cooperation summit. "I am always going to put America first, the same way I expect all of you in this room to put your countries first."