FYI.
– Obama letter possibly laced with ricin similar to contaminated Bloomberg letters, Secret Service says (CBS News, May 30, 2013):
A letter addressed to President Obama that may have been contaminated with the deadly toxin ricin is similar to two ricin-laced letters recently sent to New York City Mayor Michael Bloomberg, the U.S. Secret Service said Thursday.
A screening facility for mail sent to the White House intercepted the recent letter addressed to Mr. Obama, Secret Service spokesman Edwin Donovan said. The letter has been turned over to the FBI’s joint terrorism task force for testing and investigation.