The California Shark Protection Act would force retail shops, restaurants and small processing plants to deplete their entire stock of shark fins by the end of 2012, according to McClatchy.

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Visa and MasterCard now face a massive class action, led by Wal-Mart Stores (nyse: WMT - news - people ), that accuses them of using their clout in the credit card market to force retailers to accept their debit cards, which carry higher processing costs.

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