In the Supreme Court of the United States, AT&T Mobility LLC., petitioner, v. Vincent and Liza Concepcion, respondents [electronic resource] : on writ of certiorari to the United States Court of Appeals for the Ninth Circuit : brief of amici curiae Lawyers' Committee for Civil Rights Under Law [and 5 others] in support of respondents / Sarah Crawford, counsel of record [and 9 others]

At issue is whether the Federal Arbitration Act preempts a state law that conditions the enforcement of arbitration agreements on the availability of class-wide arbitration procedures.