Crazy Jane asked me an intriguing question a few weeks ago: "Who do you think is a worse president: Franklin Roosevelt or Barack Obama?"
I had to think about that one for a while. Here's what I came up with.
Franklin Roosevelt was ignorant of the implications of most of his policies. Some of this was because they'd never been tried before, so it could be said their results were not certain. (Although plenty of people at the time correctly foresaw the implications, but others had their reasons for disagreeing.) Some of the ignorance was because he wasn't bothered by implications. This seems to be because he wasn't smart enough to understand them.
Barack Obama, on the other hand, is using policies that have been tried for the better part of 100 years in various statist havens. We can't say no one knows the coming outcomes. And he is, by all accounts, smart enough to understand the effects of his policies. While Roosevelt ignorantly pursued policies that destroyed personal liberty, Obama is doing it willfully. The loss of personal sovereignty is a feature, not a bug, of Obama's agenda.
This is why Barack Obama has replaced Franklin Roosevelt on my list of Worst Presidents Ever.