Marshall then gave several other reasons in favor of judicial review. He argued that the authorization in Article III of the Constitution that the Court can decide cases arising "under this Constitution" implied that the Court had the power to strike down laws conflicting with the Constitution. This, Marshall wrote, meant that the Founders were willing to have the American judiciary use and interpret the Constitution when judging cases. He also argued that federal judges' oaths of office—in which they swear to discharge their duties impartially and "agreeably to the Constitution and laws of the United States"—requires them to support the Constitution. Lastly, Marshall argued that judicial review is implied in Article VI of the U.S. Constitution, since it declares that the supreme law of the United States is the Constitution and laws made "in Pursuance thereof", rather than the Constitution and all federal laws equally.