Mortgage financiersFannie Maeand Freddie Macare adequately capitalized and continue to be active in the mortgage market, said James Lockhart, director of the Office of Federal Housing Enterprise, which regulates the two enterprises.

"Both of these companies are adequately capitalized, which is our highest criteria," Lockhart said in an interview with CNBC. "They have been very active in the mortgage market, and they are continuing to be. And, in fact, Congress has put on them the requirement to do jumbo mortgages and they have been doing those as well."