Women in the US state with pregnancy complications will be exempted from the abortion ban, a judge rules.

The ex-vice-president calls on Republicans to support a 15-week ban as a "minimum nationwide standard".

In Montana, Americans too young to vote are hoping a judge will back their claim to a less-polluted state as the first constitutional climate case goes to court.

Ohio voters will decide this summer whether to make it more difficult to change the state's constitution -- only months before a potential ballot measure in November over whether to guarantee abortion rights in the state. Ohio's Republican-controlled legislature this week approved a resolution that will ask voters in August to increase the threshold needed to change the constitution from a simple majority to 60%.