http://abcnews.go.com/Politics/secr...er-obama-found/story?id=18978412#.UW7Zw8rfKUM A letter addressed to President Obama that field-tested positive for the poison ricin was received at the remote White House mail screening facility Tuesday, according to law enforcement officials. The facility routinely identifies letters or parcels that require secondary screening or scientific testing before delivery. The separate Senate mail-handling facility also Tuesday received a suspicious letter potentially laced with ricin addressed to Sen. Roger Wicker of Mississippi, postmarked from Memphis.
Authorities Arrest Man Suspected of Sending Ricin-Tainted Mail http://abcnews.go.com/Politics/mississippi-man-arrested-ricin-scare/story?id=18978412#.UW8-ZMrfKUN