Getting there is one thing. Getting back is what counts.
If we secured the border getting back from it wouldn’t be an issue. Sure putting the FEBA along the border or 10 miles into Mexico would be an undertaking, but the US Army is big enough to handle it. No doubt some leadership changes will be needed, but filtering out the incopmetents is the cost of any war. In fact its something that pays off handsomely for the next generation or so.