Hoover is not currently made in the USA. The last Hoover factory in the United States closed its doors in North Canton, Ohio in 2008. Production was moved to Mexico and China.
This shift occurred as a result of increasing competition from foreign manufacturers who could produce vacuums more cheaply than Hoover could. The company has outsourced most of its manufacturing over the past few decades as a result.
Despite no longer being made in the USA, Hoover still maintains a strong presence in the American market. It continues to be one of the most popular vacuum brands and is known for its high quality products.