The residential MBS market is expected to be healthy this year, according to some ratings service analysts. But the new president is the big unknown, market participants say. According to analysts at Fitch Ratings, the rating outlook for U.S. RMBS they rate is auspicious, as they expect asset performance trends to stay positive thanks to support from solid, if somewhat uneven, gains in home prices. “Although a number of legacy transactions continue to face negative rating pressure due to declining loan counts and tail risk, rating upgrades outnumbered...