Major rulings including Obamacare loom for U.S. Supreme Court

The U.S. Supreme Court heads into the last month of its current term with several major cases yet to be decided including a Republican bid to invalidate the Obamacare healthcare law, a dispute involving LGBT and religious rights and another focused on voting restrictions.

The court, which has a 6-3 conservative majority, has 26 cases in total left to decide. There also is speculation about the potential retirement of its oldest justice, Stephen Breyer. Some liberal activists have urged Breyer, who is 82 and has served on the court since...