Petitioner Humberto Leal Garcia (Leal) is a Mexican national who has lived in the United States since before the age of two. In 1994, he kidnaped 16-year-old Adria Sauceda, raped her with a large stick, and bludgeoned her to death with a piece of asphalt. He was convicted of murder and sentenced to death by a Texas court. He now seeks a stay *941of execution on the ground that his conviction was obtained in violation of the Vienna Convention on Consular Relations (Vienna Convention), Apr. 24, 1963, 21 U. S. T. 77, T. I. A. S. No. 6820. He relies on Case Concerning Avena and Other Mexican Nationals (Mex. v. U. S.), 2004 I. C. J. 12 (Judgt. of Mar. 31), in which the International Court of Justice (ICJ) held that the United States had violated the Vienna Convention by failing to notify him of his right to consular assistance. His argument is foreclosed by Medellin v. Texas, 552 U. S. 491 (2008) (Medellin I), in which we held that neither the Avena decision nor the President’s memorandum purporting to implement that decision constituted directly enforceable federal law. 552 U. S., at 498-499.
Leal and the United States ask us to stay the execution so that Congress may consider whether to enact legislation implementing the Avena decision. Leal contends that the Due Process Clause prohibits Texas from executing him while such legislation is under consideration. This argument is meritless. The Due Process Clause does not prohibit a State from carrying out a lawful judgment in light of unenacted legislation that might someday authorize a collateral attack on that judgment.
The United States does not endorse Leal’s due process claim. Instead, it asks us to stay the execution until January 2012 in support of our “future jurisdiction to review the judgment in a proceeding" under this yet-to-be-enacted legislation. Brief for United States as Amicus Curiae 2-3, n. 1. It relies on the fact that on June 14/2011, Senator Patrick Leahy introduced implementing legislation in the Senate with the Executive Branch’s support. No implementing legislation has been introduced in the House.
We reject this suggestion. First, we are doubtful that it is ever appropriate to stay a lower court judgment in light of unenacted legislation. Our task is to rule on what the law is, not what it might eventually be. In light of Medellin /, it is clear that there is no “fair prospect that a majority of *942the Court will conclude that the decision below was erroneous,” O’Brien v. O’Laughlin, 557 U. S. 1801, 1302 (2009) (Breyer, J., in chambers), and our task should be at an end. Neither the United States nor Justice Breyer, post, p. 943 (dissenting opinion), cites a single instance in this Court’s history in which a stay issued under analogous circumstances.
Even if there were circumstances under which a stay could issue in light of proposed legislation, this action would not present them. Medellin himself sought a stay of execution on the ground that Congress might enact implementing legislation. We denied his stay application, explaining that “Congress has not progressed beyond the bare introduction of a bill in the four years since the ICJ ruling and the four months since our ruling in [Medellin I].” Medellín v. Texas, 554 U. S. 759, 760 (2008) (per curiam) (Medellin II). It has now been seven years since the ICJ ruling and three years since our decision in Medellin I, making a stay based on the bare introduction of a bill in a single house of Congress even less justified. If a statute implementing Avena had genuinely been a priority for the political branches, it would have been enacted by now.
The United States and Justice Breyer complain of the grave international consequences that will follow from Leal’s execution. Post, at 946. Congress evidently did not find these consequences sufficiently grave to prompt its enactment of implementing legislation, and we will follow the law as written by Congress. We have no authority to stay an execution in light of an “appeal of the President,” post, at 947, presenting free-ranging assertions of foreign policy consequences, when those assertions come unaccompanied by a persuasive legal claim.
Finally, we noted in Medellin II that “[t]he beginning premise for any stay ... must be that petitioner’s confession was obtained unlawfully,” and that “[t]he United States has not wavered in its position that petitioner was not prejudiced *943by his lack of consular access.” 554 U. S., at 760. Here, the United States studiously refuses to argue that Leal was prejudiced by the Vienna Convention violation, contending instead that the Court should issue a stay simply in light of the possibility that Leal might be able to bring a Vienna Convention claim in federal court, regardless of whether his conviction will be found to be invalid. We decline to follow the United States' suggestion of granting a stay to allow Leal to bring a claim based on hypothetical legislation when it cannot even bring itself to say that his attempt to overturn his conviction has any prospect of success. We may note that in a portion of its opinion vacated by the Fifth Circuit on procedural grounds, the District Court found that any violation of the Vienna Convention would have been harmless. Leal v. Quarterman, 2007 WL 4521519, *7 (WD Tex., Dec. 17, 2007), vacated in part sub nom. Leal Garcia v. Quarterman, 573 F. 3d 214, 224-225 (2009).
The applications for stay of execution presented to Justice Scalia and by him referred to the Court are denied. The petition for a writ of habeas corpus is denied.*
It is so ordered.
Tho United Statoo’ motion for- leave to file an amicus brief is granted.