## Facts

- Carol Anne Bond, a microbiologist near Philadelphia, sought revenge on a woman who became pregnant by Bond’s husband.
- Bond stole an organoarsenic compound from her employer and purchased potassium dichromate online.
- Bond applied the chemicals to the victim’s car, mailbox, and door knob intending to cause harm; the victim suffered a minor chemical burn, and other attempts were largely unsuccessful.
- Federal prosecutors charged Bond under 18 U.S.C. § 229(a), which criminalizes possessing or using a “chemical weapon,” defined to include certain “toxic chemicals.”
- Bond was convicted under § 229; after earlier Supreme Court proceedings on standing, the Third Circuit on remand upheld the statute and Bond’s conviction as a valid implementation of a treaty.
- The Supreme Court granted review to address whether § 229 validly and properly applied to Bond’s conduct.

## Issues

1. Whether 18 U.S.C. § 229, enacted to implement the Chemical Weapons Convention, reaches Bond’s purely local assault conduct.
2. Whether courts should require clear evidence of congressional intent before interpreting a federal statute to displace traditional state criminal jurisdiction.
3. Whether the case required deciding the constitutional scope of Congress’s treaty-implementing authority under the Treaty Power and the Necessary and Proper Clause.

## Decision

- The Supreme Court reversed the Third Circuit (6–3) and set aside Bond’s conviction under § 229.
- The Court held that, properly construed, § 229 does not cover Bond’s local assault using toxic chemicals.
- The Court resolved the case on statutory interpretation grounds and declined to decide the constitutional limits of the treaty power in this context.
- The case was remanded for further proceedings consistent with the Court’s interpretation.

## Legal Principles

- Federalism concerns inform statutory interpretation; courts should be confident Congress intended to alter the federal-state balance before reading a statute to intrude deeply into areas traditionally policed by the states.
- A treaty-implementing statute aimed at chemical weapons should not be read to federalize ordinary local assaults absent a clear indication that Congress meant to reach such conduct.
- Under constitutional avoidance, when a statute can fairly be interpreted in a way that avoids serious constitutional questions, courts should adopt that interpretation.

## Conclusion

The Court construed § 229 narrowly to avoid transforming a treaty-implementing chemical weapons statute into a general federal assault law, reversing Bond’s conviction because her conduct was a local crime not encompassed by the statute as interpreted.


Bond v. United States, 572 U.S. 844 (2014)