Kerry Killinger, who led the Seattle-based thrift, also argues WaMu had adequate capital and shouldn't have been seized by the government in September 2008.
The bank "should have been given a chance to work its way through the crisis," Killinger says in testimony prepared for a hearing by a Senate panel.
Former WaMu executives are appearing before Congress for the first time since the bank's collapse. Their testimony follows the panel's 18-month investigation, which found that WaMu's lending operations were rife with fraud and that management failed to stem the deception despite internal probes.