Why maximal enforcement of federal gun laws is not always a good idea

A common trope of many Second Amendment advocates is to urge more vigorous enforcement of existing federal gun control laws, as the alternative to enacting additional laws. Rhetorically, that’s very effective. But as a policy matter, it is not always a good idea. Consider legislation recently considered by the Senate:

The Manchin-Toomey amendment was supported by the Citizens Committee for the Right to Keep and Bear Arms (CCRKBA), although the group later dropped its support for reasons unrelated to the issues raised in this post. Section 102(3) of Manchin-Toomey was the finding that “Congress believes the Department of Justice should prosecute violations of background check requirements to the maximum extent of the law.”

The alternative to Manchin-Toomey was the Grassley-Cruz substitute, which was supported by the National Rifle Association. Grassley-Cruz had a much more detailed program, with supporting funding, to increase federal prosecutions for violations of 18 U.S. Code 922 (the section which defines most of the prohibited acts by persons who are not licensed firearms dealers) and section 924 (the penalties section, with penalties for the various offenses by licensed dealers and by other persons, as well as definitions of some additional crimes). The beefed-up enforcement is in pages 15-26 of Grassley-Cruz.

Both Manchin-Toomey and Grassley-Cruz included a variety of other changes in federal gun laws, and some of them were very constructive. But as for the prosecution provisions, I think they were dubious.

To begin with, much of what is in section 922 is possessory offenses, occurring entirely within a single state. Supposedly, these provisions are enacted under Congress’s power “to regulate Commerce...among the several States.” I realize that Supreme Court since 1937 has usually been reluctant to rule that a federal criminal statute is outside the interstate commerce power. However, that judicial deference to congressional statutes is premised on the notion that Congress itself has carefully considered the constitutionality of a statute. Chief Justice Marshall’s opinion in McCulloch v. Maryland expressly discussed this point (regarding the Necessary and Proper Clause). President Andrew Jackson’s subsequent veto of the re-charter of the Second Bank of the United States cited the McCulloch opinion to make his point that the political branches must exercise their own constitutional judgment; that a deferential court has not stricken a particular type of law does not excuse Congress and the President from the task of making their own judgments about whether a particular bill is constitutional.

More Here at the Volokh Conspiracy