There are some good posts about whether or not to have the federal government play Keynes and stimulate the economy. See, for instance, Greg Mankiw, Russ Roberts, and Don Boudreaux.
I'm not a macroeconomist, nor do I play one on TV. And I don't think I could say it better than Roberts and Boudreaux above. But I have one question. Would there be much talk about a temporary tax cut to boost the economy if this weren't an election year?