In this Thursday, Sept. 19, 2013, file photo, reusable shopping bags are offered for sale at a Wal-Mart Neighborhood Market, in the Chinatown district of Los Angeles.
In this Thursday, Sept. 19, 2013, file photo, reusable shopping bags are offered for sale at a Wal-Mart Neighborhood Market, in the Chinatown district of Los Angeles. Nick Ut AP
In this Thursday, Sept. 19, 2013, file photo, reusable shopping bags are offered for sale at a Wal-Mart Neighborhood Market, in the Chinatown district of Los Angeles. Nick Ut AP