Pursuant to section 208(b)(2)(C) of the INA, 8 U.S.C. 1158(b)(2)(C), the Departments are revising 8 CFR 208.13(c) and 8 CFR 1208.13(c) to add a new mandatory bar on eligibility for asylum for certain aliens who are subject to a presidential proclamation suspending or imposing limitations on their entry into the United States pursuant to section 212(f) of the INA, 8 U.S.C. 1182(f), or section 215(a)(1) of the INA, 8 U.S.C. 1185(a)(1), and who enter the United States in contravention of such a proclamation after the effective date of this rule. The bar would be subject to several further limitations: (1) the bar would apply only prospectively, to aliens who enter the United States after the effective date of such a proclamation; (2) the proclamation must concern entry at the southern border; and (3) the bar on asylum eligibility would not apply if the proclamation expressly disclaims affecting asylum eligibility for aliens within its scope, or expressly provides for a waiver or exception that entitles the alien to relief from the limitation on entry imposed by the proclamation. The President has both statutory and inherent constitutional authority to suspend the entry of aliens into the United States when it is in the national interest. See United States ex rel. Knauff v. Shaughnessy, 338 U.S. 537, 542 (1950) (“The exclusion of aliens is a fundamental act of sovereignty” that derives from “legislative power” and also “is inherent in the executive power to control the foreign affairs of the nation.”); see also Proposed Interdiction of Haitian Flag Vessels, 5 Op. O.L.C. 242, 244–45 (1981) (“[T]he sovereignty of the Nation, which is the basis of our ability to exclude all aliens, is lodged in both political branches of the government,” and even without congressional action, the President may “act[] to protect the United States from massive illegal immigration.”)