Sorry, but you're wrong. There is no "constitutional right" to immigration, legal or otherwise.
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According to the Supreme Court, aliens seeking initial entry into the United States have no constitutional rights regarding their applications for admission.
1 The Court has reasoned that the government has the inherent, sovereign authority to admit or exclude aliens, and that aliens standing outside of the geographic boundaries of the United States have no vested right to be admitted into the country.
2
Thus, in its 1953 decision in Shaughnessy v. United States ex rel. Mezei, the Court held that the government could deny entry to an alien without a hearing, notwithstanding the alien’s temporary harborage on Ellis Island pending the government’s attempts to remove him from the United States.
3 More recently, in Department of Homeland Security v. Thuraissigiam, the Court in 2020 rejected an alien’s constitutional challenge to a federal statute that limits judicial review of an expedited order of removal, reasoning that the alien—who was apprehended shortly after entering the United States unlawfully—could be considered to be an applicant for admission at the border.
4 In short, for aliens seeking admission into the United States, the decision to permit or deny entry by an executive or administrative officer, acting within powers expressly conferred by Congress, is due process of law.
5
https://constitution.congress.gov/browse/essay/amdt5-6-2-2/ALDE_00013725/