WASHINGTON (Reuters) - The U.S. economy is facing a troubling mix of higher prices and weak growth. (http://feeds.feedburner.com/~ff/reuters/topNews?d=yIl2AUoC8zA) (http://feeds.feedburner.com/~ff/reuters/topNews?i=aKkt6mTgPZc:OpDeEFY-G4Y:V_sGLiPBpWU) (http://feeds.feedburner.com/~ff/reuters/topNews?i=aKkt6mTgPZc:OpDeEFY-G4Y:-BTjWOF_DHI) (http://feeds.feedburner.com/~r/reuters/topNews/~4/aKkt6mTgPZc)