On behalf of the liberals, I will be silent

; however, I would like to tell you that Kennedy was no liberal; he was a democrat, but no liberal. Had he been a liberal, he would had enacted the Civil Rights Bill that was sitting on his desk during his presidency, but wouldn't out of fear of losing the south in '64.
The Nixon's campaign revolved around instilling fear that Kennedy will impose his "catholic moral values" upon us by making his decisions based on the Pope's opinion.
But let's assume that he was a liberal; in which case, your posting was a huge historical endorsement for Bill Clinton. When Clinton took over office, the Reagan/Bush(Sr) administrations had spent trillions of dollars in the military in order to defeat the Soviets in the Cold War. As a result, we won the war, but lost the economy.
Bill Clinton rescued our economy by using the same principles as JFK; take as much money as we can gather and invest it into the private sector, then turn around and cut government spending. In doing so, the economy had gotten stronger, the government received more money, therefore, there was no need to raise taxes.
Bill Clinton angered the nation with his historic tax raise, but in the end, it was the only tax raise he'd made and it left us with the highest surplus in over 30 years. Conservative leaders criticized Clinton for "stealing their ideas"; he didn't steal their ideas, he stole Kennedy's ideas. The GOP then tried to tell America, "No, Ronald Reagan did it". I blew that off by saying the following...
"Jeff Gordon's car was given to him by his dad... Do I see his dad's name on the trophies? No! Why? Because even though the car was given to him, Jeff still had to go out there and drive that car."
As far as morality is concerned, you're kidding right? I'd studied John Kennedy, I'd met his widow Jackie O; Bill Clinton is no JFK...Bill only had ONE known affair during his presidency.
To sum it up; give it a rest. The only difference between the left then and now lies within three issues; abortion (Kennedy never had to address), affirmative action (Kennedy never had to address), and homosexuality (Kennedy never had to address). Why? Because the last thing that went though his mind, when these issues were developing, was a bullet! The man was dead before these issues were at the forefront.
I close with a very interesting comparison; one between JFK and GWB
http://www.probe.org/docs/jfk.html