At USA Today, however, Tom Nichols notes that it was a political disaster for Trump.
In short, the American people were treated to the astonishing sight of a former FBI director repeatedly calling the president of the United States a liar, including twice in the very first minutes of his testimony. Comey then went farther, in effect daring the president to contradict him. When the subject of Trump’s tweet about tapes came up, for example, Comey said: “Lordy, I hope there are tapes.” When Sen. Tom Cotton, R-Ark., curtly asked Comey if he would agree to release his personal notes in exchange for the president releasing any tapes, Comey merely said, “Sure.”
"The President is not a liar" is almost as bad as Nixon's "I am not a crook.”— Frank Luntz (@FrankLuntz) June 8, 2017
Bad language. Bad strategy. https://t.co/HhFbWQB95q