Here's the pertinent quote from Scalia, who wrote the SUPREME COURT'S OPINION in HELLER:
The
Second Amendment is naturally divided into two parts: its prefatory clause and its operative clause.
The former does not limit the latter grammatically, but rather announces a purpose. The Amendment could be rephrased, “Because a well regulated Militia is necessary to the security of a free State, the right of the people to keep and bear Arms shall not be infringed.” See J. Tiffany, A Treatise on Government and Constitutional Law §585, p. 394 (1867); Brief for Professors of Linguistics and English as Amici Curiae 3 (hereinafter Linguists’ Brief). Although this structure of the
Second Amendment is unique in our Constitution, other legal documents of the founding era, particularly individual-rights provisions of state constitutions, commonly included a prefatory statement of purpose. See generally Volokh, The Commonplace
Second Amendment , 73 N. Y. U. L. Rev. 793, 814–821 (1998).
Logic demands that there be a link between the stated purpose and the command. The
Second Amendment would be nonsensical if it read, “A well regulated Militia, being necessary to the security of a free State, the right of the people to petition for redress of grievances shall not be infringed.” That requirement of logical connection may cause a prefatory clause to resolve an ambiguity in the operative clause (“The separation of church and state being an important objective, the teachings of canons shall have no place in our jurisprudence.” The preface makes clear that the operative clause refers not to canons of interpretation but to clergymen.)
But apart from that clarifying function, a prefatory clause does not limit or expand the scope of the operative clause. See F. Dwarris, A General Treatise on Statutes 268–269 (P. Potter ed. 1871) (hereinafter Dwarris); T. Sedgwick, The Interpretation and Construction of Statutory and Constitutional Law 42–45 (2d ed. 1874).
3 “ ‘It is nothing unusual in acts … for the enacting part to go beyond the preamble; the remedy often extends beyond the particular act or mischief which first suggested the necessity of the law.’ ” J. Bishop, Commentaries on Written Laws and Their Interpretation §51, p. 49 (1882) (quoting
Rex v.
Marks, 3 East, 157, 165 (K. B. 1802)). Therefore, while we will begin our textual analysis with the operative clause, we will return to the prefatory clause to ensure that our reading of the operative clause is consistent with the announced purpose.
4
www.law.cornell.edu
Suck on that, Dion.