The Supreme Court will consider banning non-unanimous juries in criminal cases in Louisiana, the only state that still allows them.

The justices said Monday they will hear an appeal from a man who was convicted of second-degree murder by a jury's 10-2 vote. First-degree murder charges already require a unanimous jury to convict.

Oregon voters recently approved a state constitutional amendment that ended Oregon's use of divided juries to convict some criminal defendants.

The high court also is agreeing Monday to decide whether states can eliminate the so-called insanity defense for criminal defendants without violating the Constitution.

The appeal comes from a Kansas man who has been sentenced to death for killing his estranged wife, their two daughters and the wife's grandmother. The cases will be argued in the fall.