The U.S. Supreme Court will embark Monday on the first chapter of a legal saga over abortion that could see the nationwide right to the procedure sharply limited in coming months.

It will mark a fresh legal look at a socially divisive issue, with a 6–3 conservative high court majority poised for a politically-charged ruling.

The justices over the next month will hear separate challenges to restrictions on abortion access enacted by Mississippi – with its ban after 15 weeks of pregnancy – and Texas – with a more restrictive six-week ban.