Fannie Mae may be ready to welcome a new GSE regulator as the firm continues to be hammered by its current safety and soundness regulator, the Office of Federal Housing Enterprise Oversight. At a hearing last week, OFHEO Director Armando Falcon updated lawmakers on the agency’s ongoing investigation of accounting problems at Fannie Mae and highlighted two new misdeeds that have allegedly been uncovered: document tampering that could be tied to inflated executive bonuses and…