Ken at Popehat has an explainer on how the case of Gamble v. U.S. before the Supreme Court, on the operation of the dual-sovereignty exception to double jeopardy protection, is 1) not the subject of some fiendish plot to give Trump pardons universal effect by way of a Kavanaugh fifth vote; 2) not a conventional left-right issue either, Ruth Ginsburg and Clarence Thomas having joined in an opinion questioning the current doctrine. (Cato has joined in an amicus brief with Brianne Gorod of the left-leaning Constitutional Accountability Center to support the Ginsburg-Thomas position as more consistent with both originalism and civil liberties.) Earlier here (cert stage of Gamble) and here (similar Tyler case).
P.S. The Federalist Society has a link roundup and short Ilya Shapiro video on the case.