You would need to do a lot of handwaving to try to argue that spending more money on "american-made" goods, just so that we can feel better psychologically, is a better use of tax money than, say, cancer research.
I'm not even sure what "american-made" would mean in the context of software, which is produced on a global scale. I guess we would have to use Windows Server for the backend systems (and only those parts of it made in the US), instead of Linux, which has Finnish origins.
Of course, I'm not saying CGI has proven very cost effective.