China committed to not ‘provide material support to Iran,’ US trade rep says

U.S. Trade Representative Jamieson Greer joined ABC News’ “This Week” after President Donald Trump’s high-stakes trip to China.

​U.S. Trade Representative Jamieson Greer joined ABC News’ “This Week” after President Donald Trump’s high-stakes trip to China.  Politics U.S. Trade Representative Jamieson Greer joined ABC News’ “This Week” after President Donald Trump’s high-stakes trip to China.