Fannie Mae and Freddie Mac are continuing to be the targets of numerous lawsuits, as the latest attacks center on allegations that the two GSEs violated anti-trust laws in setting the guarantee fees they charge lenders. The issue of whether Fannie and Freddie overcharge lenders for guaranteeing the mortgages they securitize surfaced last month when lawmakers disclosed an analysis of this activity by the Office of Federal Housing Enterprise Oversight. Although the comments by OFHEO…