I maintain that Reagan only took in more revenue because he increase borrowing and spending. Which he did.

There is no free lunch.

As to tax levels of the 1960s one major difference. Those taxes back then were targeted at business and other wealthy targets more than the middle class. Today the middle class pays a larger portion of their earnings in taxes than they did in the 1960s. We need to close tax loop holes like the ones that give tax breaks to corporations for outsourcing American jobs over seas.