Sanders hesitates to predict whether Denver will be able to sell its expansion plans to voters. But he says he's been struck by the success convention advocates have had in getting cash-strapped cities to fund ever larger convention halls. "There's no welfare for poor people but the most astonishing welfare for hotels and restaurants," he says. "There are two kinds of convention and visitor's bureau directors: the ones who are convinced they're not doing well because their center is not big enough, and those who think they'd do better if they had a bigger center. And there's always somebody who can build a bigger one.