FAA section 2’s exception for contracts of employment for workers in interstate commerce does not apply to or exempt business entities or commercial contracts from the FAA even if they are engaged in interstate commerce.  Plaintiff was a sophisticated business.  So delegation of arbitrability questions to the arbitrator in accordance with the chosen AAA Rules was not unconscionable.  Accordingly, it was up to the arbitrator to decide the rest of plaintiff’s unconscionability arguments that were directed to the arbitration agreement as a whole.