A legislative body can't force a segmentation of funds on their own! (I always laughed when my state legislators promised to do this.) Such a decision is overr

A legislative body can't force a segmentation of funds on their own! (I always laughed when my state legislators promised to do this.) Such a decision is overridable by 50%+1 of the legislative body--that same number that is would take to spend the money. Okay, yes, a constitutional amendment would work, but I suspect most legislators proposing a "wall" like the one in question would be lukewarm to the idea.