Except in most countries, abortion is illegal by the second trimester. Second trimester abortions (so up until 24 weeks) had to be legal under Roe. Only regulations that are about the mother's health were allowed. So you could mandate that second-trimester abortions have to be in a hospital, but you couldn't outlaw a 20 week abortion completely, the way most developed, civilized countries have.

PP v Casey changed that a bit, sure, but that was 30 years ago.