The chairman of the House Budget Committee said this week that a full and transparent accounting of the cost to taxpayers of the federal takeover of Fannie Mae and Freddie Mac is the first, best step to determine how to wind down the two government-sponsored enterprises.During a hearing on taxpayer exposure in the housing markets relating to Fannie, Freddie and the FHA, Rep. Paul Ryan, R-WI, took aim at the White House’s plan for a post-GSE mortgage market. “While the Treasury Department has put forward a ‘framework for reform,’ the Obama administration still...