That is one of the dumbest questions of the year..... why should he? Why is this a dumb question.... when the impeachment process was started before the president even swore his oath.... is why. This impeachment is a shame and has been since the beginnning. Who identifies a criminal - then and goes in search of a person to pin it on? Only people who are corrupt from the core. Only people filled with so much hatred, they no longer think soundly. But that is what hatred does.