AE like all shoe companies sources its leather from all over whether Horween or from other locations around the world. It wouldn't make any sense or would there be any economic advantage to make part of a shoe in the DR and then ship the unfinished shoes to Wisconsin to be completed. Too much confusion keeping track of all the components and also the costs involved. Now personally I don't even think it matters where a product is made as long as it's made by the same standards because there are skilled craftsmen in every country, but these shoes are made in the US.
Did you read the letter from the president that someone posted? He indicated that DR is more than just a leather source; AE has an actual factory and employees there that assemble the uppers.
I do agree with you though, that as long as there is quality control, it really doesn't matter where a product is made.