IMO the politicians are going to continue spending until something breaks unfortunately, then they'll blame someone else for their failures.
Now with Trump in office even the Repubs. know the spending is going to increase, so they just turn their head to it. I firmly believe the Run-away Train is just going to continue run until it runs off the tracks and crashes. When that happens is anyone's guess, but there won't be enough money to bail it out. Negative interest rates won't matter when everyone is broke.
Tommy, this video from Peter Schiff backs my premise about the Elite running the Train till it crashes. He explains it perfectly IMO. He speaks to how much debt can be piled up before it happens. We don't know how much.