evidence: Former President Donald Trump has said several times over the years that he wants to replace the Affordable Care Act, or Obamacare — most recently in December. Trump has since walked back this stance, writing on social media in March that he "isn’t running to terminate" the health care law, but instead wants to make it "better" and "less expensive." Trump hasn’t said how he would do this, and health care policy experts said it’s difficult to know where he stands without a detailed plan.