Bloomberg has just released a detailed map showing where the 1.8 million migrants who arrived in the US in 2023 are living. This map uses data from immigration court cases to show exactly which counties are seeing the biggest influx of new residents. It turns out that most of these migrants have settled in the eastern half of the country, with notable concentrations in the Mid-Atlantic, Northeast, Midwest, and Rust Belt regions.

Here’s where things get intriguing: The map also highlights...