A top legislative leader is calling on Iowa Department of Transportation officials to pay more attention to the state’s air service system.House Republican Leader Christopher Rants of Sioux City says he’ll wait for the new D-O-T director to make the change internally, but if it doesn’t happen soon — Rants will make sure the legislature forces the shift in emphasis.Rants says access to affordable air service is critical to the state’s ability to attract and keep businesses here.Rants says leisure travel is important to Iowans, too, and too many residents are forced to drive to airports in surrounding states to get reasonably-prices airfares.