The Democratic National Committee has no plans to repay Duke Energy for an unprecedented $10 million line of credit it guaranteed to help the Democratic convention’s local host committee put on President Obama’s three-day nominating convention in Charlotte, N.C., last September. A Duke company official said the company was claiming the money as a business expense for tax purposes, meaning shareholders will foot $6 million of the cost, according to a report in the Charlotte Observer. The company didn’t limit its convention financial support to the loan guarantee. It also donated $4.1 million to a separate fund formed to accept...