Why does iowa not allow smoking in bars, but says its ok in casinos?

Question

http://www.iowasmokefreeair.gov/

Answer 1

because the casino owners lobbied the state legislature more forcefully than the bar owners, claiming that patrons won't gamble and drink as much if they can't smoke.

Answer 2

Yes. The liberals decided it doesn't matter if private bar owners go broke. But don't mess with their tax revenues. They even publicly stated and admitted it