Studies suggest the intervention was greatly successful at protecting Americans’ teeth. Water fluoridation was credited with a 65% reduction in cavities, and in 1999, the Centers for Disease Control and Prevention declared water fluoridation as one of the greatest public health interventions of the 20th century.

Days before the election, Kennedy posted on social media that a Trump White House would advise all U.S. water systems to remove fluoride from the public water supply, which goes against public health recommendations yet jibes with a large number of people who question the safety of fluoridating water.

Seth addresses Trump picking Robert F. Kennedy Jr. as his Health and Human Services secretary and more in his monologue for Monday, November 18, before taking a closer look at Trump planning to use the military to round up migrants when he takes office.