For years, millions of Americans were frightened of two words: pre-existing conditions. Before the Affordable Care Act, private insurance could deny coverage to people with pre-existing conditions. That's what Republicans want to return to.

To learn more about about pre-existing conditions and what could happen if the Republican proposal becomes law, I talked with Andy Slavitt, the former Administrator of Centers for Medicare and Medicaid Services under President Obama.

Music by: Podington Bear