https://www.dekut.com/World_Business/ricin-scare-rattles-washington/ "To see a wrong and not expose it, is to become a silent partner to its continuance." So read the letters that touched off a poison scare across Washington, after the contents of the envelopes discovered at off-site White House and Senate mailrooms showed preliminary positive results for ricin, a law enforcement source said Wednesday. The letters were signed, "I am KC and I approve this message," the source said. Wed, 17 Apr 2013 18:13:52 UTC en