Does Amy Coney Barrett oppose Obamacare?

Claim: Former vice president Joe Biden has said that if judge Amy Coney Barrett gets confirmed to the Supreme Court, she will vote to strike down the Affordable Care Act (ACA), because she opposes it.
Rating: This claim is MOSTLY TRUE. In the past, Barrett has criticized the ACA (also known as Obamacare). But Barrett has not stated publicly if she will vote to strike down the ACA if she is confirmed to the Supreme Court. If the ACA is declared unconstitutional in the Supreme Court, around 23 million Americans will lose health coverage.