"In light of that, we are communicating to Congress that we are transferring our full efforts to working with the Enterprises to implement the steps required under Section 310." Those steps, Watt said, include developing a proposed rule; receiving and evaluating public comment on the proposed rule; and issuing a Final Rule to govern verification of credit score models. Since 2015, FHFA, Fannie Mae and Freddie Mac have been actively evaluating the potential impact of a new credit score model or models on access to credit, safety and soundness, operations in the mortgage finance industry and competition in the credit score market for some time as part of an ongoing Conservatorship Scorecard Initiative. Fannie Mae and Freddie Mac Seller Guides require them to use three "legacy" credit scoring models developed by Fair, Isaac Corp. (FICO) through Equifax, Experian and TransUnion.