A Woonsocket woman is facing federal charges accusing her of a scheme that defrauded undocumented immigrants.  Patria Zuniga is accused of defrauding the immigrants in the Worcester, Massachusetts area who were seeking to become permanent residents of the U.S.  She allegedly ripped off more than 600-thousand dollars from the immigrants between 2010 and 2012.  She was arrested yesterday, and faces a maximum of 20-years in prison if convicted.