"How do you not know? How do you not investigate?" Erickson wrote on Monday. "By 2002, everybody knew Duke was still the man he had claimed not to be. EVERYBODY." "How the hell does somebody show up at a David Duke organized event in 2002 and claim ignorance?" Erickson asked.No problem with replacing Boehner and Scalise, but I wonder if Erik asked the same questions when Obama claimed ignorance about his pastor's "preachings".