In the Philly Inquirer (whispering in a certain chairman’s ear?):

But if it is improper to demand an answer from Roberts about Roe, it is doubly improper to do what some senators have now said they intend to do: vote against him if he does not vow to uphold it. They have established a
litmus test that the ethical rules forbid Judge Roberts to satisfy, even if he wanted to. Erecting conditions to confirmation that Judge Roberts is ethically forbidden to satisfy is not the sort of fair treatment of him that senators from both political parties have pledged to ensure.