CATO is a Libertarian "think tank": http://www.sourcewatch.org/index.php?title=Cato_Institute
One of their big issues has been the privatization of Social Security

As for Reagan, he took office as the country was finally getting over the economic and political problems of the Vietnam War. Total outstanding debt was $930 Billion. He used 8 years of relative peace and prosperity to increase the debt to $2.6 Trillion. We went from being the largest international creditor to the largest debtor during his presidency. Spin it any way you like, those are the facts.