WASHINGTON – A congressional committee issued a subpoena Tuesday for the top executive of a small company that allegedly shipped the tainted peanut products responsible for a national salmonella outbreak.The House Energy and Commerce Committee voted to compel Peanut Corp. of America President Stewart Parnell to appear at a hearing Wednesday, as a wide-ranging investigation focuses on who was responsible for an outbreak that has sickened at least 600 people and may have contributed to eight deaths.
