Elm have asymmetrical leaves, those aren't.
Elm
may have an asymmetrical leaf base, but not always. It is also less apparent in young leaves, such as the ones pictures here.
However, since I do see some asymmetry in some of the leaves, it is pretty obvious that is must be an elm of some sort. Since I'm not familiar with North American
Ulmus species, I can't ID it to species level. However, since all elms are good bow wood, there is no need to worry. Just cut it and treat it as bow wood!