"Sen. Flake: It's not conservative to stay silent about the chaos of the Trump administration" PBS NewsHour 8/1/2017

IMHO:  'Conscience?'  They don't have any.  They are mean spirited and money worshipers who do not believe they have a moral obligation to people.

Excerpt

SUMMARY:  In his new book “Conscience of a Conservative,” Sen. Jeff Flake (R-Ariz) examines where his own party has gone wrong, calls for a return to conservatism and criticizes the man at the top of the ticket.  Sitting down with Judy Woodruff for a conversation, the Republican senator speaks out about President Trump but says he has “done nothing” that would force lawmakers to kick him out of office.