Closing arguments began today in Minnesota's tobacco trial. Settlement talks have collapsed, and the chief executive of Blue Cross and Blue Shield of Minnesota says chances of a settlement are "extremely slim." He said one problem was tobacco companies' demand that they be protected against lawsuits by Minnesota counties. Hennepin County commissioners are informally debating whether to sue the tobacco industry to recoup county costs for treating sick smokers. Commissioner Randy Johnson says the immunity issue is moot: Hennepin County Commissioner Randy Johnson.