The story of Carol Anne Bond, a jilted lover who took revenge on her husband's mistress, leads to a US Supreme Court case that questions a part of the US treaty power. Bond's revenge involved poisoning her husband's mistress, which sparked a legal battle. This case is connected to an international chemical weapons treaty, which may seem unrelated but is actually part of a larger debate. The debate centers around the tug of war between local and federal law in the US Constitution. To understand this, we need to go back to the birth of the US Constitution and explore the ongoing argument at the heart of the system of government. A duck hunt in 1918 is also somehow connected to this debate. The story of Carol Anne Bond and the duck hunt are part of a larger exploration of the US Constitution and its treaty power. Radiolab, a podcast, is exploring this story and its implications. The podcast is supported by listeners and foundations, and encourages listeners to engage with the show through social media and email. By exploring this unusual story, Radiolab is shedding light on the complexities of the US Constitution.