Freddie Mac’s $475 million net loss in the third quarter of 2015 – its first in four years – underscores the need to rebuild capital reserves at the two government-sponsored enterprises and to plan for their emergence from conservatorship, according to some mortgage groups and housing advocates. In a joint letter, the Community Home Lenders Association and the Community Mortgage Lenders of America, both of which represent small independent mortgage lenders, urged President Obama to support recommended revisions to a sweep agreement that prohibits the GSEs from rebuilding capital and to free them from conservatorship. Freddie’s third-quarter loss was...