Donald Trump has never liked the Affordable Care Act (Obamacare). He tried to overturn it during his term in office, but was blocked by the vote of Senator John McCain. Now, in the current campaign, he has again said that he would overturn the ACA if elected.
J.D. Vance knows this is an unpopular opinion, so when asked about it during the debate he lied. Here is what Politifact had to say about ...