I wonder about that. It's been a while since I studied, but the phrase "deadweight loss" looms large in what I remember of the one economics class I took in college. So I wouldn't be surprised if the program is actually a net negative for job creation.
Only that doesn't matter, either, because the point is not to create more jobs; the point is to influence job creation in a way that benefits the people who hold the purse strings. If the cost of doing so outweighs the benefits, that's inconsequential. Those costs are so widely dispersed as to be invisible, immeasurable, and difficult to discuss except on theoretical grounds. They'll never be as compelling as a staged photograph of a senator in a suit and a hard hat, sticking a shovel in the ground.