By David Badash,The New Civil Rights Movement A decades-long veteran of Republican politics, Fox News commentator Marc Thiessen, has delivered a warning to the GOP: change course, because the Republicans’ midterm elections performance was “an absolute disaster for the Republican Party.” His warning was even mentioned later Wednesday on “Fox & Friends.” But that warning concludes with a stunning suggestion. Thiessen’s conservative bonafides are unquestionable. A former White House speechwriter for Bush 43 and Defense Secretary Donald Rumsfeld, he has defended the use of waterboarding, which is …