And you assume ground forces aren't already planned.
Some special forces on the ground might be planned, but a full invasion will take hundreds of thousands of troops an vast amounts of transport, munitions, armour etc
That mobilisation and build up would be very obvious and probably take quite some time. The yanks have a lot of equipment in the region, but barely any troops.
Anyway, even Trump isn't stupid enough to try that, even if bibi tells him to.