Corzine blames predecessors for MF Global's fall

``Corzine deflected blame for the company's collapse. He argued that he inherited a firm already doomed by his predecessors' bad financial decisions. He appeared strained and at times grasped for words. But Corzine responded to every question posed, choosing not to exercise his Fifth Amendment right. His answers were cautiously worded. He often said he couldn't recall or lacked access to materials needed for him to answer. ''