TEXARKANA, Texas — A Texas woman accused of sending ricin-laced letters to President Barack Obama and New York Mayor Michael Bloomberg has reached a plea deal with federal prosecutors, a newspaper reported Saturday. Assistant U.S. Attorney Frank Coan added into the case docket for Shannon Guess Richardson, a Flowery Branch native, a one-line entry that states "notice of plea agreement," the Texarkana Gazette reported (http://bit.ly/17EiXgr .) Authorities say the New Boston, Texas, actress mailed ricin-laced letters to Obama, Bloomberg and a leader of the mayor's gun-control group. Court documents state the then-pregnant Richardson tried to frame her husband for the crime.