I got an email back from Redwing on the topic of where their boots are made. They provided the following link to the list of the 62 models they have that are still made in the usa (some with usa materials, some with imported materials):
http://www.redwingsafety.com/safety-boots/filter-made-in-usa/page-1/maxnum-0
http://www.redwingsafety.com/safety-boots/filter-made-in-usa/page-1/maxnum-0