US diplomat: Trump linked Ukraine aid to demand for probe

Ambassador William Taylor, Jr. arrives for a closed door meeting to testify as part of the House impeachment inquiry into President Donald Trump on Capitol Hill in Washington, Tuesday, Oct. 22, 2019. (AP Photo/Andrew Harnik)

WASHINGTON — A top U.S. diplomat testified Tuesday that President Donald Trump was holding back military aid for Ukraine unless the country agreed to investigate Democrats and a company linked to Joe Biden’s family, providing lawmakers with a detailed new account of the quid pro quo central to the impeachment probe.