Tobacco legislation in the U-S Senate faces a roadblock, as Senate members have signaled their opposition to limit the industry's liability from lawsuits to eight billion dollars a year. Meanwhile, Senate conservatives have attacked the bill's tax increases. The tobacco bill's chief author, Arizona Senator John McCain, says he will continue to push the legislation. Those price increases are the subject of current television ads sponsored by the tobacco industry. The ads feature portrayals of working people who smoke asking why Congress is singling them out for another tax. David Logan, law professor at Wake Forest in Winston-Salem, North Carolina says the ads are a smart strategy by the tobacco industry.