This interactive node-link diagram visualizes the Twitter interaction network of the 117th United States Congress, using data from the Stanford SNAP repository that records retweets, replies, and mentions among members. The visualization displays nodes as circles representing congress members and edges as cyan lines representing interactions. Built with D3 v7, the layout uses physics-based simulation via `d3.forceSimulation`, including `d3.forceLink`, `d3.forceManyBody`, and `d3.forceCenter` to position nodes. Hovering over a node triggers a tooltip showing the node ID and its neighbors, while `d3.drag()` allows users to reposition nodes interactively with SVG rendering and CSS transitions.