U.S. President Barack Obama has officially opened the summit of 21 Asian-Pacific leaders in Hawaii, saying their ultimate goal is creating a seamless regional economy.

Mr. Obama formally welcomed the leaders of the Asian-Pacific Economic Cooperation forum Sunday, telling them they have much to do. He said 3 billion citizens are looking towards them to increase exports, expand trade, and create jobs.

He said APEC can accomplish these goals by creating green jobs focused on renewable energy and environmental protection, and streamlining regulations that could restrict commerce.

Mr. Obama said he is confident the APEC leaders can make progress, reminding them they have done it before.

Saturday, Mr. Obama secured a basic agreement with eight other APEC leaders to create a huge Pacific Rim free trade zone called the Trans-Pacific Partnership.

He also held talks with Chinese President Hu Jintao. The White House said Mr. Obama used the meeting to pressure Beijing on currency policy and protecting intellectual property rights.

U.S. officials said Mr. Obama was “very direct” in communicating the increasing frustration among the public and U.S. businesses about the pace of change in China on key economic issues.

China has been critical of the TPP free trade zone, suggesting it is a form of trade protectionism.

Mr. Hu called for more communication and cooperation. He said Beijing and Washington need to respect each other's major concerns and “appropriately manage” sensitive issues.