government actions. After the Court exercised its power of judicial review in Marbury, it avoided striking down a federal statute during the next fifty years. The court would not do so again until Dred Scott v. Sandford, 60 U.S. (19 How.) 393 (1857). However, the Supreme Court did exercise judicial review in other contexts. In particular, the Court struck down a number of state statutes that were contrary to the Constitution. The first case in which the Supreme Court struck down a state statute as unconstitutional was Fletcher v. Peck, 10 U.S. (6 Cranch) 87 (1810). In a few cases, state courts took the position that their judgments were final and were not subject to review by the Supreme Court. They argued that the Constitution did not give the Supreme Court the authority to review state court decisions. They asserted that the Judiciary Act of 1789, which provided that the Supreme Court could hear certain appeals from state courts, was unconstitutional. In effect, these state courts were asserting that the principle of judicial review did not extend to allow federal review of state court decisions. This would have left the states free to adopt their own interpretations of the Constitution. The Supreme Court rejected this argument. In Martin v. Hunter's Lessee, 14 U.S. (1 Wheat.) 304 (1816), the Court held that under Article III, the federal courts have jurisdiction to hear all cases arising under the Constitution and laws of the United States, and that the Supreme Court has appellate jurisdiction in all such cases, whether those cases are filed in state or federal courts. The Court issued another decision to the same effect in the context of a criminal case, Cohens v. Virginia, 19 U.S. (6 Wheat.) 264 (1821). It is now well established that the Supreme Court may review decisions of state courts that involve federal law. The Supreme Court also has reviewed actions of the federal executive branch to determine whether those actions were authorized by acts of Congress or were beyond the authority granted by Congress. Judicial review is now well established as a cornerstone of constitutional law. As of September 2017, the United States Supreme Court had held unconstitutional portions or the entirety of some 182 Acts of the U.S. Congress, the most recently in the Supreme Court's June 2017 Matal v. Tam and 2019 Iancu v. Brunetti decisions striking down a portion of July