Proof That Justice Ginsburg Was Once A Law Professor:
From Footnote 5 in her opinion in Vermont v. Brillon:
Notably, the Vermont Supreme Court made no ruling under the State's own prescription, but instead relied solely on the Federal Constitution. Because it did so, our review authority was properly invoked and exercised. See Oregon v. Hass, 420 U. S. 714, 719--720 (1975); Ginsburg, Book Review, 92 Harv. L. Rev. 340, 343--344 (1978).