Quiz Time (Argh of the Week)

I live on the edge of town abutting small acreages and not more than a mile from the prairie at Pioneers Park. The advantage of this location is easy access to the interstate and a close drive to a lovely urban grassland. The disadvantages include these guys:

I'd be better able to manage them if I could burn my gardens, aka, my entire lot. They not only pop up in the back meadow and garden beds, but also the front beds and in the lawn. Over the last year I've pulled well over 100 seedlings of this native yet very aggressive tree. It's managed in prairies by burning, and even one lone specimen in several hundred acres will cause grassland birds to nest elsewhere. It's a water hog. It shades out prairie plants. Birds love the berries and poop them out all over the place. Folks out east rave over their use in gardens and folks out west listen in suspended disbelief with jaw agape looking for the nearest exit.

Tell me what this plant is (like you don't know) and you'll win a free invisible Tesla sedan.