bacon and sausage are now safe to eat: according to the FDA they will no longer allow a drug which has been used in pigs for 40 years, but leaves carcinogenic compounds in the pig's liver.

Source: WSJ and the FDA website.
"Today, the U.S. Food and Drug Administration’s Center for Veterinary Medicine (CVM) took the first step toward rescinding its approval of the use of carbadox to treat swine because the drug may leave trace amounts of a carcinogenic residue."