NEW YORK (Reuters) - A backup plan to raise the U.S. debt ceiling and avoid default could still lead to a negative outlook on the country's ratings, Moody's said on Tuesday, highlighting the plan's failure to substantially reduce the deficit. (http://feeds.feedburner.com/~ff/reuters/topNews?d=yIl2AUoC8zA) (http://feeds.feedburner.com/~ff/reuters/topNews?i=2dbqFH07Mb8:x33kPqcBy_w:V_sGLiPBpWU) (http://feeds.feedburner.com/~ff/reuters/topNews?i=2dbqFH07Mb8:x33kPqcBy_w:-BTjWOF_DHI) (http://feeds.feedburner.com/~r/reuters/topNews/~4/2dbqFH07Mb8)