Trump’s program is likely to be Constitutionally sound, along the lines of building and maintaining roads, as opposed to Obama who handed out money for everything but building roads.
I think I could argue against the bill on constitutional grounds, but in this case, I argue against the Keynesian fallacy that such spending is a stimulus to the economy. Since the money being spent must also be confiscated from the same economy being "stimulated", the net result is, at best, a wash.