http://slate.msn.com/id/2093947/
The slate article explains how JFK was converted to becoming a "Demand-side" Keynesian tax cutter.
But, of course, the top rate (for people making 400,000 dollars or more per year) was 91% at the time. He lowered it to 70%.
If Republicans love JFK, perhaps they'll consider returning to the JFK tax code?