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U.S. President Barack Obama smiles as members of the media walk out as he meets with Malcolm Turnbull, Australia's prime minister, not pictured, in the Oval Office of the White House in Washington, D.C., U.S., on Tuesday, Jan. 19, 2016. Turnbull says he plans to encourage U.S. lawmakers to support the pending Trans-Pacific Partnership free-trade agreement during his visit to Washington this week. Photographer: Andrew Harrer/Bloomberg via Getty Images

U.S. President Barack Obama smiles as members of the media walk out as he meets with Malcolm Turnbull, Australia's prime minister, not pictured, in the Oval Office of the White House in Washington, D.C., U.S., on Tuesday, Jan. 19, 2016. Turnbull says he plans to encourage U.S. lawmakers to support the pending Trans-Pacific Partnership free-trade agreement during his visit to Washington this week. Photographer: Andrew Harrer/Bloomberg via Getty Images