President Donald Trump reached 100 days in office this week, which “Late Show” host Stephen Colbert noted has been considered a milestone since President Franklin D. Roosevelt took office in 1933.

“FDR’s extraordinary productivity set a first 100-day standard against which all future presidents would be measured,” Colbert noted on Tuesday night. “And I think it’s appropriate to compare him to FDR because Trump is well on his way to bringing back polio.”

Trump has slashed medical research and staffed public health agencies with figures who have questioned or opposed key preventive measures such as vaccination.

This week, for example, Health and Human Services Secretary Robert F. Kennedy Jr. didn’t recommend childhood vaccines, but instead told parents to “do your own research” even as a measles outbreak continues to spread.

See more of Colbert’s look at Trump’s first 100 days in his Tuesday night “Late Show” monologue: