WASHINGTON (AP) - The U.S. Secret Service says it has intercepted a letter addressed to President Barack Obama that contained a "suspicious substance."
Secret Service spokesman Ed Donovan says the letter was intercepted at a facility away from the White House Tuesday. This comes a day after lawmakers said a letter was mailed to Sen. Roger Wicker that tested positive for poisonous ricin. Another senator said police have a suspect in mind.
Tensions have been high in Washington and across the country since the deadly bombings Monday at the Boston Marathon that killed three...