Russian operative Maria Butina admitted Thursday to conspiring to infiltrate influential conservative organizations, including the National Rifle Association, in an effort to push Moscow's agenda. Butina, 30, who has agreed to cooperate with federal prosecutors, pleaded guilty in a Washington courtroom to one count of conspiracy to violate the law governing foreign agents operating in the U.S. The felony carries a five-year prison term, but the estimated sentencing guideline range is from zero to six months in prison.