SEATTLE POST-INTELLIGENCERhttp://seattlepi.nwsource.com/business/182915_costco21.html Costco, Wal-Mart duel in political arenaWarehouse-store giants give money to opposing partiesWednesday, July 21, 2004By MICHAEL FORSYTHE AND RACHEL KATZBLOOMBERG NEWSExecutives at Costco Wholesale Corp. and Wal-Mart Stores Inc., competitors in the $76 billion U.S. warehouse-club market, have taken their rivalry to a new level: national politics.Costco Chief Executive Officer Jim Sinegal, 68, is a Democrat who says President Bush's $1.7 trillion in tax cuts unfairly benefit the wealthy. He opposed the Iraq war and supports Sen. John Kerry of Massachusetts for president. And he's the only chief executive of a company in the Standard & Poor's 500...