SAN FRANCISCO – JUNE 02: A cashier bags groceries in plastic bags at Nijiya Market June 2, 2010 in San Francisco, California. California may become the first state in the nation to ban plastic bags from grocery and convenience stores. In addition to the ban, consumers would be charged 5 cents per paper bag if they do not bring their own reusable bags. Assembly bill AB1998 is supported by Gov. Arnold Schwarzengger and is expected to pass an assembly vote this week before moving to the State Senate for a vote later this year. (Photo by Justin Sullivan/Getty Images)