Irish spring soap originated in Germany but is now also made in the USA in the Colgate Manufacturing plant.
Colgate is now the owner and manufacturer of Irish Spring Soap.
Colgate has manufacturing plants is several different locations including Morristown, Tennessee; and Cambridge, Ohio.
So the Irish Spring Soap could be made in either of those locations or in all of them depending on what they manufacture in those locations.
It's hard to find information on where some products are manufactured because companies do not usually disclose their locations anymore due to security concerns.