I've looked through my copy of the National Audubon Societys Field Guied to North American Trees a few times now and am unable to locate anything resembling those pods. The closest is a mesquite but the tree is too tall and not even remotely in the appropriate region.
So with that said I'm about 99% sure that it's a non-native ornamental. The closest I've been able to find species wise is a Japanese Pagoda. While maybe not exact it has to be in the same genetic family. I'm pretty sure that it likely has pinnately compound leaves much like most locust trees as that's a trait among pod bearing trees. Back in the 70s there was a huge boom in bringing in exotic ornamental trees and bushes for universities, parks and homes. One of the reasons Ohio is covered in that damn Amur honeysuckle tree. Anyway. The Japanese Pagoda.
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