Hillsdale College historian Bert Folsom rebuts his colleagues here.

No surprise. The Siena College presidential poll?a ranking of 44
presidents by 200 historians?put Franklin Roosevelt in first place. In
other words, the man who, during his first two terms, gave us nonstop
double digit unemployment?and 20 percent unemployment toward the end of
his second term, is ranked ahead of George Washington, Abraham Lincoln,
and all other American presidents.

And that may not be the worst indiscretion. These historians also
ranked Barack Obama ahead of Ronald Reagan. In other words, if you
start your presidency with 8 percent unemployment and run it to 10
percent (all the while going further in debt by more than
$1,000,000,000,000) you are greater than the president who sharply
reduced unemployment and inflation during his first term and then ended
the Cold War in his second term.