** FILE ** Cars and trucks on the New Jersey Turnpike pass the ConocoPhillips refinery in Linden, N.J. in this Aug. 2, 2001 file photo. Rules for the law Congress passed last Oct. giving the Homeland Security Department the authority to regulate the nation's most hazardous chemical plants, have now been published and are the subject of controversy. The government lists about 100 plants nationwide with a million or more people living in such a "vulnerability zone." (AP Photo/Mike Derer, File)