(Reuters) -Former White House chief of staff Mark Meadows, who served under Donald Trump, has complied with a subpoena from the Justice Department’s investigation into the events surrounding the Jan. 6, 2021, attack on the Capitol, CNN reported on Wednesday, citing sources. That makes him the highest-ranking Trump official known to have responded to a subpoena in the federal investigation, CNN said. The onslaught on the Capitol by Trump supporters led to several deaths, injured police officer...