Sen. John Carona (R., Dallas)Â drives byÂ those same freeway billboards you and I do every day enticing Dallas money to Louisiana and Oklahoma casinos.Â If his billÂ to allow casinos at 12 sites in Texas (two in Dallas County) can muster a two-thirds majority, it goes on the ballot in November as a constitutional amendment.Â My money saysÂ it will pass. Suddenly that hotel starts looking like a better bet. I argued against it lastÂ November because the city’s rosy financialÂ forecast didn’t make sense. But a casino down the street makes all the difference — not only to the city, but to private investors. And that makes me wonder if the city would need to invest a single dime.