Domino's moved to compel arbitration, and the plaintiffs opposed on the basis that Domino's couldn't enforce the arbitration agreements because Domino's hadn't signed the agreements; only their franchises had. However, incorporation of the AAA rules in the plaintiffs' agreements provided "clear and unmistakable" evidence that the parties agreed to arbitrate "arbitrability." The circuit court did not find these arguments availing and affirmed the Eastern District of Michigan's ruling referring the matter to arbitration.