While I appreciate efficiency, I don't think this is the way to go about it. I am all for transparency and letting people see what's going on, but having each agency justify exactly what they're spending money on and why would be akin to a witch hunt on anything one side or another doesn't deem necessary. What happens if someone doesn't like their explanation? What are the implications of a bad justification? If republicans don't like that we're spending money on stem cell research does that mean it's cut? If democrats don't like that we're spending on new military tech does that get cut? Sorry. But sometimes all the justification available is "because science" and that needs to be ok.