Three Idaho families are suing over an immigration raid at a horse racing track last year. They claim state and federal law enforcement used unconstitutional tactics, detaining people because they appeared to be Latino and keeping them in zip ties for hours. The raid involved 200 officers and targeted a family-friendly event popular with the Latino community. The October raid came as part of an FBI-led investigation into allegations of illegal gambling, but only five people at the event were arrested in connection with the gambling investigation. More than 100 others were arrested on suspicion of immigration violations. The families, all U.S. citizens or lawful residents, are seeking class-action status and damages.