"According to Newsday.com, “In 1984, Congress voted to penalize any state that set its legal drinking age lower than 21 by rescinding 10 percent of that state’s federal highway funding.” Whether setting the legal minimum at 21 is a good policy or not, it should be set by the states, not the federal government. In a nation of 300 million people that stretches from one end of the continent to another, the drinking age should not be set by 535 legislators in one city on the East Coast. Blackmailing states with threats of funding cuts if their internal policies are not what Congress deems appropriate is in direct opposition to the spirit of the Tenth Amendment."
He gets this part right, but goes on to water it down with his recommendation.
HoosierAccess » Blog Archive » Time to lower the drinking age?