On paper US (and allied) ground forces might be some use - after all they spifflicated Saddam Hussein's ground forces who had something of a reputation as desert warriors - but there are several buts. First they would properly need the permission of the legitimate governments of all the territories involved, and second that is likely to involve a deal with Assad (devil, long spoon, etc), and third - is it not going to create more martyrs?

Second option, not an offensive ground war but simply a defensive one - but I am pressed to think of times this has been successful.