Yes, North Dakota's ban on abortion is unconstitutional as the Constitution lays out powers for the Supreme Court, and the Supreme Court already ruled Roe v Wade constitutional. North Dakota is seeking to buck the law of the land, and this cannot be tolerated. Their banning of abortion is indeed Unconstitutional.
Every woman should have the right to do whatever they please with there body, it's that simple. No government official should control what a woman can do with a child literally attached to her. It is not yet it's own person and it is sole property of the woman in a way.