House Judiciary Committee chairman Rep. Jerry Nadler (D-NY) wrote to President Donald Trump Friday, giving him until Friday, Dec. 6., to answer whether he and his lawyers would participate in the “impeachment inquiry.” ... Nadler added that Trump is being investigated for obstruction of justice, relating to actions described by Mueller in the second volume of his report, though Mueller did not recommend prosecution and Attorney General William Barr rejected obstruction charges against Trump on the merits. ... Nadler has invited the president and his counsel to call and question witnesses, in accordance with the House resolution authorizing the impeachment...