Greetings Renee, welcome to the Forums.
Alas, this NOT the native American Bittersweet (Celastrus scandens), but its invasive cousin Oriental Bittersweet (Celastrus orbiculatus).
The former is native to eastern and central North America, the latter to China, southeastern Russia, Sakhalin, Korea, and Japan.
Both are in the type genus of the Bittersweet family (Celastraceae),
Unfortunately, not only is Oriental Bittersweet invasive, but it also hybridizes with the native species. The hybrid offspring shows reduced fitness and female fecundity, as well as male sterility.