Sen. Jeff Flake on GOP issues and "crisis of principle"
Republican Sen. Jeff Flake believes the GOP is no longer conservative. In his new book, the Arizona senator writes: "Never has a party so quickly or easily abandoned its core principles as my party did in the course of the 2016 campaign." Flake joins "CBS This Morning" to discuss his new book, "Conscience of a Conservative," President Trump, and the Republican health care bill.