"E-commerce has grown into a significant and vibrant part of our national economy against the backdrop of established rules, including the physical-presence rule. Any alteration to those rules with the potential to disrupt the development of such a critical segment of the economy should be undertaken by Congress," Roberts wrote in a dissent joined by Justices Stephen Breyer, Elena Kagan and Sonia Sotomayor. The lineup of justices on each side of the case was unusual, with Roberts joining three more liberal justices and Ginsburg joining her more conservative colleagues.