In theory, of course.
The US could achieve a successful ground invasion in Iran. They did far more difficult things during WW2.
But they'd have to introduce the draft back and would have to be willing to accept WW2 levels of casualties. Furthermore they'd have to mobilize their entire military for that single undertaking. Meaning, deploying the entire USAF, USN, USMC and Army. The logistical dimension would be unthinkable and the expenses staggering. And while the US has mastered logsitics like no other military that's currently active, this might just break them. It would also ultimately mean they'd have to abandon all their other interests temporarily. A Situation everyone who wishes could take advantage of in their respective backyard. So not only do I not see that happening, it would be political suicide for Trump and everyone associated with his government. Thus the Israel lobby would have to look for a new pawn.
So going half hearted in would be Afghanistan but much, much, much worse, going all in would ultimately yield success but the cost would make that a phyrric victory at best.