FILE - In this Monday, Jan. 23, 2017, file photo, President Donald Trump signs an executive order to withdraw the U.S. from the 12-nation Trans-Pacific Partnership trade pact agreed to under the Obama administration in the Oval Office of the White House in Washington. With his rejection of an Asian trade pact, Trump has started tackling policy changes that could inadvertently give China room to assert itself as a regional leader and worsen strains over the South China Sea and Taiwan. (AP Photo/Evan Vucci, File)