The injunction did not violate principles of comity. (supremeadvocacy.ca)
Further, it contends that the extraterritorial reach of the injunction is inappropriate and a violation of principles of comity. (slaw.ca)
For class actions in particular, the Court pointed out that Congress also has provided the remedy of enlarged removal jurisdiction under CAFA, and that, once in federal court, class actions may be transferred and consolidated in one court, and that «we would expect federal courts to apply principles of comity to each other's class certification decisions when addressing a common dispute.» (thompsonhine.com)