This interactive tree map visualizes U.S. Immigration and Customs Enforcement (ICE) arrest quantities by area of responsibility for the fiscal year 2024, using a dataset that includes geographic locations and numerical values. SVG rectangles are sized proportionally to arrest counts and colored via a blue-to-green interpolated scale, with hover tooltips displaying exact figures. The visualization is built with D3.js, leveraging its `d3.treemap()`, `d3.hierarchy()`, and `d3.scaleOrdinal()` APIs to compute layout and styling, while a smooth transition and animation enhance the rendering. Data is loaded from a CSV file and filtered for the target year.