Page "Class action" Paragraph 28

In the 2011 court case AT & T Mobility v. Concepcion, the U. S. Supreme Court ruled in a 5-4 decision that the Federal Arbitration Act of 1925 preempts state laws that prohibit contracts from disallowing class action lawsuits, which will make it more difficult for consumers to file class action lawsuits.

The dissent pointed to a saving clause in the federal act which allowed states to determine how a contract or its clauses may be revoked.