Blanche Lincoln may represent Arkansas in the US Senate -- but given the pain she's trying to inflict on New York's financial sector, she might as well hail from London or Hong Kong. With talks under way to reconcile House and Senate financial-reform bills, the powerful Agriculture Committee chairwoman is reportedly working overtime to resurrect a plan that would force banks to part ways with their lucrative derivatives-trading operations. Which, in turn, would separate New York from a healthy chunk of its tax base -- and a whole lot of jobs. Few would dispute, of course, that the market for...