Answering Feinstein on Roe, Kavanaugh said it is “settled as a precedent of the Supreme Court entitled to respect under stare decisis,” (the principle that when an issue has been settled by a previous decision, it sets a precedent that should not be departed from) but then launched into a discussion of Planned Parenthood v. Casey, as a reaffirmation of Roe. Casey, however, reaffirmed the basic right in Roe, but strongly limited its protections. That’s Kavanaugh saying in not so many words that he’s open to adding new precedents that would eventually gut Roe.
So there’s two key issues settled, or not. Kavanaugh thinks machine guns should be where regulation of weapons start and is perfectly willing to keep on chipping away at Roe.