A woman suspected of sending an envelope containing the poison ricin, which was addressed to the White House, has been arrested at the New York-Canada border and is also suspected of sending similar poisoned envelopes to law enforcement agencies in Texas, officials said Monday. The letter had been intercepted earlier this week before it reached the White House. The woman was taken into custody by U.S. Customs and Border Protection officers at the Peace Bridge border crossing near Buffalo and is expected to face federal charges, three law enforcement officials told The Associated Press. Her name was not immediately released,...