The Federal Reserve’s decision late last year to taper its agency MBS purchases appears to have contributed to higher mortgage rates, which in turn has helped lead to “significant reductions” in Fannie Mae and Freddie Mac guaranty fee revenue on MBS issued so far this year, according to the Federal Housing Finance Agency’s Inspector General. The evaluation report issued by the IG late this week concluded that continued tapering by the Fed and the eventual reduction of its massive MBS portfolio could have an “adverse impact” upon the financial performance of the two government-sponsored enterprises. “Although the Federal Reserve’s [quantitative easing] programs benefitted the enterprises’ financial condition in 2012 and 2013, its decision, among other factors, in late 2013 to taper its MBS purchases contributed...