Unfortunatly, blenders have many parts and are complicated to manufacture. This means that most manufactures make blenders in China. The cost of labor makes a great business case. There are a few exceptions though. Several high-end manufacturers are making blenders in the USA. There is also a company making more affordable blenders in Mexico.
Waring Commercial is also a high-end manufacturer of blenders. As you can tell by the name, they specialize in commercial blenders that are super reliable and heavy duty. You would not find many buttons or features, but theya re very durable. They make all of their blenders in the USA.