Senator JD Vance and Governor Tim Walz exchanged claims on immigration and economic impacts during the vice presidential debate. Vance asserted that millions of undocumented immigrants were increasing competition for scarce housing, driving up prices. Fact checks indicate that while immigration may increase demand, the U.S. housing shortage dates back to the 2008 recession and is a more significant factor. Walz claimed that border crossings are down under the Biden administration compared to Trump's term. Data shows a recent decline but also record high yearly apprehensions during Biden's presidency. Vance falsely claimed Harris was the "border czar." The vice president's role focused on addressing migration causes, while border enforcement falls under Homeland Security Secretary Mayorkas.