Even by the low standards of Congress, Loretta Sanchez’s performance ranks as a disgrace. The Democrat from California managed — in just a few minutes — to turn the congressional investigation of the marathon terror bombings into a political hatchet job, while demonstrating her complete ignorance of basic facts of the case. Sanchez somehow butchered the names of the alleged terror bombers not once, but three times, calling the Tsarnaev brothers “Tsarnavar,” then “Tsarnev,” and finally “Tsarnov.” “There are still unanswered questions about the Tsarnavar brothers,” the tongue-tied congresswoman said. Yes, like, how to pronounce the names of the terrorists....