During testimony this week before the Senate Banking, Housing and Urban Affairs Committee, housing trade association representatives warned lawmakers that the current efforts to wind down Fannie Mae and Freddie Mac must not disrupt the already fragile housing and secondary mortgage markets. National Association of Home Builders First Vice Chairman Barry Rutenberg told Senators that Fannie and Freddie should neither be converted to government agencies nor should their functions be completely turned over to the private market. Instead. NAHB supports making major changes in the structure and operations of the secondary mortgage market not unlike...