Wasnt the anthrax incident shortly after 9/11
"An envelope addressed to Senator Roger Wicker of Mississippi twice tested positive Tuesday for ricin, a potentially fatal poison, congressional officials said, heightening concerns a day after a bombing killed three and left more than 170 injured at the Boston Marathon."
http://www.cbc.ca/news/world/story/2...in-poison.html
I know the clip refers to the letter going to Senator Wicker but CNN reporting one to Obama as well.