Also, the Fed can only hold interest rates artificially low and print money like it's going out of style for so long before the pressure cooker explodes. Then your so-called "negligible inflation" will make the US look like Zimbabwe.
Lastly, borrowing money at little or no cost does not take care of the problem. This is like saying you have things under control because you paid off your MasterCard with your Visa. Contrary to popular Keynesian (and Krugman) opinions, being in debt is not a good thing.