CNN legal affairs correspondent Joan Biskupic discusses the roots of Roberts' conservatism and his work for the Reagan and George H.W. Bush administrations. She says he's had a conservative impact on the law, but is also deeply concerned about the court's reputation — something President Trump would be wise to remember. "The more Donald Trump talks about how the court is on his side, the more he's going to drive John Roberts to the left, because the last thing John Roberts wants to do is to appear Donald Trump's notion that judges will automatically rule in the favor of the president who appointed them." Biskupic's new book is 'The Chief.'

Also, book critic Maureen Corrigan reviews the political novel 'The Other Americans,' by Laila Lalami.