welcome back to "early start." i'm john berman. >> i'm christine romans. 31 minutes past the hour. word that new jersey senator cory booker will take the unprecedented step of testifying against the confirmation of another sitting senator. this doesn't happen. booker has been added to the witness list for senator jeff sessions' hearing on wednesday. the second day of session hearings which begin today. booker says he is concerned about trump's pick for attorney general. especially what he calls sessions failure to defend civil rights, minority and lgbt americans. he said i do not take lightly the decision to testify lightly. the immense powers of the attorney general and this nominee is a call to conscious. the attorney general is required for the fair administration of justice. i lack confidence that sessions can honor this duty. also set to testify against the confirmation is senator john