Special Counsel Robert Mueller warned he could order Donald Trump to testify as part of a probe into alleged Russian election meddling, US media report.
Trump’s Russia ties
BBC: Mueller ‘threatened Trump with subpoena’ amid Russia probe
(FILES) This file photo taken on June 19, 2013 shows then Federal Bureau of Investigation (FBI) Director Robert Mueller testifying before the US Senate Judiciary Committee on oversight during a hearing on Capitol Hill in Washington, DC.
