...If there is a limit to America's public debt, we are nowhere near it and would not be near it with double the stimulus I advocate...
Hard to tell if that's your answer but the post seems to say you consider fiscal policy over the past four years to have been one of austerity in contrast to say, the four previous.
The total deficit spending over the past four years has been more than double that of the four previous, and that alone should characterize post crisis fiscal policy --however necessary-- as anything but "austere".
You persist in repeating an historical error. Both in Europe and America, "austerity " policies were not on the agenda until 2010, banking reform and stimulus were. So arguing about the "last four years" is the wrong time frame, as it includes both a period of stimulus (2009-2010) and a period of retrenchment (2011-present).
I take your argument as being that austerity has never been truly attempted. From that I surmise that you are a "hard austerian" who holds that austerity means a level of government spending that is no greater than that level that would have created a balanced public budget in the previous time period. I can't find where you have ever defined austerity; here is your opportunity to correct me.
If I am correct as to your definition, then since it has not been tried, there is no evidence that austerity has ever worked. Further, the closer an economy gets to austerity policies, the worse its economic performance. I do not see the logic in an argument that as you approach the recommended policy things get worse, but once you get there confidence fairies will make everything work out. If you are one of those who criticize stimulus as not having been effective, I ask why you believe that austerity which has also proven ineffective should be judged by a different standard. At least we knew from the beginning the stimulus was too small to provide adequate recovery and there is a general agreement that it forestalled a full-blown depression, at least moving the economy in the correct direction. Austerity attempts have moved economies in the wrong direction.
If you want to debate the above paragraph, I will be happy to do so. Start by defining what you mean by austerity and where and when it has been implemented. I look forward to your reply.