When a state court rejects some claims but does not expressly address a federal claim, must the federal court presume that the federal claim was adjudicated on the merits?

When a state court decision on a petitioner's claims rejects some claims but does not expressly address a federal claim, a federal habeas court must presume, subject to rebuttal, that the federal claim was adjudicated on the merits. Johnson v. Williams, ___ U.S. ___, 133 S.Ct. 1088, 1091 (2013).

The state courts need not have cited to federal authority, or even have indicated awareness of federal authority in arriving at their decision. Early, 537 U.S. at 8, 123 S.Ct. at 365. Where the state courts have not addressed the constitutional issue in dispute in any reasoned opinion, the federal court will independently review the record in adjudication of that issue. "Independent review of the record is not de novo review of the constitutional issue, but rather, the only method by which we can determine whether a silent state court decision is objectively unreasonable." Himes v. Thompson, 336 F.3d 848, 853 (9th Cir. 2003).