Looks like Mississippi Gov. Haley Barbour’s on a roll. Fresh off of praising the federal response to Katrina as “generous” — in a speech in New Orleans, no less — the chair of the Republican Governors Association tells CNN that slavery “goes without saying.” On CNN’s Sunday morning show, Candy Crowley asked Barbour about Virginia Gov. Bob McDonnell’s Confederate History Month debacle, in which he revived the state’s celebration of the Confederacy but originally omitted from his proclamation any reference to slavery. (McDonnell later apologized and rewrote the proclamation.) Barbour said those angry about McDonnell’s slavery blackout were “trying to make a big deal out of something that doesn’t amount to diddly” and that is like a “nit.” The Daily Beast has the video, above.