Despite this year’s implementation of a new Fannie Mae and Freddie Mac representations-and-warranties framework that promises repurchase relief with a three-year sunset on liability, the GSEs still hold all the cards and a very big stick when it comes to lenders managing their buyback risks, according to an expert during an exclusive Inside Mortgage Finance webinar this week. Jonathan Jaffe, a partner at the law firm of K&L Gates, told webinar participants that Fannie’s and Freddie’s hyper-aggressive enforcement of their repurchase options and frequently updated rules creates a near constant state of uncertainty for lenders who have been made all too aware that too much buyback resistance could result in them being on the wrong end of a “nuclear” exchange.