INTERNATIONAL NEWS - Mr Trump is expected to outline the future US role in the region when it comes to trade and growth.
His "America First" slogan and withdrawal from a regional trade deal is seen as move away from free trade.
He has also vowed to correct a huge trade imbalance with China and Japan.
Apec brings together 21 economies from both sides of the Pacific - the equivalent of about 60% of the world's GDP.
Since taking office, President Trump has pulled the US out of the Trans Pacific Partnership, a major trade deal with 12 Apec member countries, arguing it would hurt US economic interests.
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Mr Trump is due make a speech at 06:30 GMT. He will be followed by Chinese President Xi Jinping.
