S20E21: Coming to Homerica

In "The Simpsons" Season 20, Episode 21, titled "Coming to Homerica," Springfield faces a crisis when the neighboring town of Ogdenville's economy collapses, leading its residents to flood Springfield in search of work. The Springfieldians initially welcome the Ogdenvillians, who are of Norwegian descent, because they are hardworking and bring their own cultural touch to the town. However, tensions soon rise as the influx of newcomers strains resources and causes friction between the two communities. Mayor Quimby decides to close the border between Springfield and Ogdenville, reminiscent of a certain famous wall-building initiative, which only exacerbates the situation. In the end, Homer spearheads a group of Springfieldians to construct a wall along the border. But as expected in classic Simpsons fashion, things don't go as planned. The townspeople from both sides eventually come together, realizing cooperation is more beneficial than division. They tear down the wall they've built and decide to work together to solve their shared problems, wrapping up the episode with a typical Springfield-style resolution: chaotic but somehow heartwarming.