You can see on this screenshot. The speculation is that it's the USA with the biggest debt, but when you look at these numbers you can understand that the actual debt problems are in West Europe and it's welfare system that is abused by foreign citizens.
USA owns most of its credit. That's not the case with France, UK, Germany.
You could see that with this kind of politics it will be a short ride for the big Western European countries.
Immigration at this level (and with this system) is totally unsustainable for the near future.
I wish the germans, british and french reform their systems before it's too late.