Campsis radicans has much more regular, pinnate leaves. Ampelopsis arborea occurs in Oklahoma. Here is a link that might be useful: Ampelopsis arborea

It looks like a morning glory, and if I'm wrong on the id, then my second and third guesses are bindweed or mile-a-minute vine. To me, the name didn't matter so much as getting a handle on it. 2 years ago, this was not present on my property. Last year, around June, I started seeing it for the first time ever, and it QUICKLY (2 weeks) smothered a 15' pear tree and did its best to run whereever it could. It was easy to tear out of the tree(s), but the thin stems make it hard to get a good hold of when trying to uproot, and usually breaks off at ground level, which will only make it resprout in a few days. Thankfully, I've found it easy to control with roundup, which pretty much stops it in its tracks. If its climbing into a nice shrub or tree, I'll just squirt the ground-level leaves of this vine to keep the spray away from any foliage of the host. It quickly dies back and the stuff tangled in the trees withers to dust shortly. This year its only been spotted in a few spots, and I've been quick on the control efforts. It never flowered, and certainly never went to seed last year, so I'm not sure where its coming from, other than perhaps little bits of root left over from last year when I first started to yank it. FWIW, I think it only likes sunny spots, as it doesn't seem to be in any of my shade canopies. (we'll leave those areas to the creeper, PI, nightshade and bittersweet)

we are in eastern Mass, but not sure if considered "sandy" part! If you mean along the shore or down near the Cape, then no. About 25 miles southwest of Boston. It does seem bent-like, and I've almost always had tufts and patches of bentgrass (the bane of my existence in what is otherwise kbg, rye, fescue mix) and this seems way more aggressively vine-like. While the other bent patches are carpet-like, this one is more like a clump with 1 definitive vine. The clump in the picture is just one that is lonely in the mulch bed, but the lawn itself near this area is a whole big patch of this stuff. Thank you!

Don't know if the plant will make it. While removing the diseased parts I saw that the main stem at ground level is split open with some tan colored substance coming out. So maybe it is hanging on a thread at this point. Our weather has been excessively swampy which is normal for us in mid to late July. I've a feeling that had a negative impact on it. We do have pumpkin growers in our region but I imagine their fields have better circulation than us. We are living at the edge of the woods and the air here is often quite still and humid. That doesn't help. I'm keeping a close eye on it and hoping it can survive long enough to pick our veggie. This made me think about the summer our neighbors gave us a tomato plant and it gave us one solitary tomato! Lol