#Trump100Days Roosevelt's first 100 days were so productive that presidents have been evaluated at that point ever since, for their early accomplishments as well as missteps. But there's only so much the first 100 days can tell us.

"Look at Abraham Lincoln … the union literally collapsed during that period and he is today considered one of our greatest presidents," Julian Zelizer, professor of history and public affairs at Princeton University, told NPR's Here & Now in 2021.