The Minnesota House passed and sent to Gov. Rudy Perpich a bill raising the drinking age from 19 to 21. The change in age would go into effect Sept. 1, but people who are 19 before that time could continue to drink under a "grandfather" phase-in provision. Supporters of the bill said it would save lives and could gain up to $133 million in federal highway money for Minnesota in the next two years. But opponents called it "federal blackmail" and said teen-agers would drive to Wisconsin to drink.