I suspect they would be surprised to know that.
“This Court from the time of its foundation has adhered to the principle that it will not review judgments of state courts that rest on adequate and independent state grounds.” Murdock v. Memphis, 20 Wall. 590, 636; Berea College v. Kentucky, 211 U.S. 45, 53; Enterprise Irrigation District v. Farmers Mutual Canal Co., 243 U.S. 157, 164; Fox Film Corp. v. Muller, 296 U.S. 207.
“The reason is so obvious that it has rarely been thought to warrant statement. It is found in the partitioning of power between the state and federal judicial systems and in the limitations of our own jurisdiction. Our only power over state judgments is to correct them to the extent that they incorrectly adjudge federal rights. And our power is to correct wrong judgments, not to revise opinions. We are not permitted to render an advisory opinion, and if the same judgment would be rendered by the state court after we corrected its views of federal laws, our review could amount to nothing more than an advisory opinion.” Fox Film Corp. v. Muller, 296 U.S. 207 (1935)