This April, the Supreme Court heard arguments on the issue of who should decide claims as to the unenforceability of an agreement to arbitrate the enforceability of an arbitration agreement–an arbitrator or a court. The high court delivered its opinion June 21 and in doing so established guidance for where such claims belong.

The case stemmed from 2007 claims that Antonio Jackson filed in Nevada federal court against his former employer Rent-A-Center, West Inc.