The core of the argument is a clash between an originalist reading of the 14th Amendment's text and the long-standing precedent set by the Supreme Court. Proponents of change argue the framers' intent was to tie citizenship to allegiance and domicile, while opponents and justices point to a century of case law upholding a broad, territorial definition of birthright citizenship.
The case hinges on the definition of 'subject to the jurisdiction thereof'. One side contends it means owing complete and undivided political allegiance to the U.S., a status not held by temporary visitors or undocumented aliens. The other side argues it simply means being subject to U.S. laws, a condition met by nearly everyone physically present in the country.
The legal debate is explicitly linked to contemporary policy concerns. A narrower interpretation of the Citizenship Clause is presented as a tool to curb illegal immigration by removing a key 'pull factor' and to address the 'birth tourism' industry.
Both sides heavily reference the post-Civil War context in which the 14th Amendment was drafted. The primary purpose of overruling the *Dred Scott* decision and enfranchising freed slaves is used to support both a narrow, specific application and a broad, universal principle of citizenship.
Justices raised concerns about the practical challenges of implementing a new, domicile-based citizenship rule. They questioned the difficulty of adjudicating a parent's subjective intent to reside permanently versus the current, objective bright-line rule of birth on U.S. soil.
Keep pulling the thread on Citizenship Clause.