Even if it were going somewhere.. it wouldn’t matter because any such amendment would have to have an out in case of a national emergency.
And the first time they needed more money... they would simply declare an emergency.
We have officially been in a national emergency since 1933 or so. At least, that was the justification for various laws still in effect before SCOTUS back when. If they’d ever come before SCOTUS again you probably wouldn’t need to bother defending them, but that hasn’t happened, so officially we’ve been in an 80 year emergency.