I have worked in the machine tool manufacturing industry for 35 years and have seen components from all over the world. A lot of US companies own factories in China. The company I work for has manufacturing facilities in Mexico, India, Korea, Japan, China and Europe as well as the US. Many companies import products to the US as unfinished goods and basically just rebrand and call it made in the USA. As long as some final operation is performed on the product here it's OK. From my experience, most of the product which originates in these foreign countries is excellent because it is US quality control making the decisions as to whether or not the product is acceptable and outlining and overseeing the manufacturing processes. Your Ford, Dodge and GM cars and trucks have parts made from all over the world. The Mexican made bearings most likely are assembled in Mexico but the races, rollers, balls and cages are imported from all over the world. I worked on a project with Timken Bearing 10 years ago as they were setting up a factory in Romania. Made in USA today could just mean it was put in a box here so don't be overly concerned because the origin of the raw material and subcomponents could be from anywhere.