Process and schedule The Senate trial began on January 7, 1999, with Chief Justice of the United States William Rehnquist presiding. The first day consisted of formal presentation of the charges against Clinton, and of Rehnquist swearing in all senators. A resolution on rules and procedure for the trial was adopted unanimously on the following day; however, senators tabled the question of whether to call witnesses in the trial. The trial remained in recess while briefs were filed by the House (January 11) and Clinton (January 13). The managers presented their case over three days, from January 14 to 16, with discussion of the facts and background of the case; detailed cases for both articles of impeachment (including excerpts from videotaped grand jury testimony that Clinton had made the previous August); matters of interpretation and application of the laws governing perjury and obstruction of justice; and argument that the evidence and precedents justified removal of the President from office by virtue of "willful, premeditated, deliberate corruption of the nation's system of justice through perjury and obstruction of justice". The defense presentation took place January 19–21. Clinton's defense counsel argued that Clinton's grand jury testimony had too many inconsistencies to be a clear case of perjury, that the investigation and impeachment had been tainted by partisan political bias, that the President's approval rating of more than 70 percent indicated his ability to govern had not been impaired by the scandal, and that the managers had ultimately presented "an unsubstantiated, circumstantial case that does not meet the constitutional standard to remove the President from office". January 22 and 23 were devoted to questions from members of the Senate to the House managers and Clinton's defense counsel. Under the rules, all questions (over 150) were to be written down and given to Rehnquist to read to the party being questioned. On January 25, Senator Robert Byrd moved for dismissals of both articles of impeachment. On the following day, Representative Bryant moved to call witnesses to the trial, a question the Senate had scrupulously avoided to that point. In both cases, the Senate voted to deliberate on the question in private session, rather than public, televised procedure. On January 27, the Senate voted on both motions in public session; the motion to dismiss failed on a nearly party line vote of 56–44, while the motion to depose witnesses passed by the same margin. A