PRECISELY one year ago, we lucky taxpayers took over Fannie Mae and Freddie Mac, the mortgage finance giants that contributed mightily to the wild and crazy home-loan-boom-turned-bust. In that rescue operation, the Treasury agreed to pony up as much as $200 billion to keep Fannie in the black, coughing up cash whenever its liabilities exceed its assets. According to the company’s most recent quarterly financial statement, the Treasury will, by Sept. 30, have handed over $45 billion to shore up the company’s net worth.

It is still unclear what the ultimate cost of this bailout will be. But thanks to inquiries by Representative Alan Grayson, a Florida Democrat, we do know of another, simply outrageous cost. As a result of the Fannie takeover, taxpayers are paying millions of dollars in legal defense bills for three top former executives, including Franklin D. Raines, who left the company in late 2004 under accusations of accounting improprieties. From Sept. 6, 2008, to July 21, these legal payments totaled $6.3 million.

With all the turmoil of the financial crisis, you may have forgotten about the book-cooking that went on at Fannie Mae. Government inquiries found that between 1998 and 2004, senior executives at Fannie manipulated its results to hit earnings targets and generate $115 million in bonus compensation. Fannie had to restate its financial results by $6.3 billion.

Almost two years later, in 2006, Fannie’s regulator concluded an investigation of the accounting with a scathing report. “The conduct of Mr. Raines, chief financial officer J. Timothy Howard, and other members of the inner circle of senior executives at Fannie Mae was inconsistent with the values of responsibility, accountability, and integrity,” it said.