@Cycloptichorn,
You are correct that soverign entities, able to print or otherwise create money, cannot go bankrupt. However the money so created can lose all value, causing the collapse of ordinary economic activity and credit - and the collapse of the political structure and legitamacy of the government itself. This has happened several times during the last century, and in each case the social and economic effects were devastating and long-lasting (the hyper inflation that occurred in the late 1920s & early 1930s in Germany is the classic example).
Your blithe willingness to increase taxation (mostly on others) ignores the effects of such taxation, just as your willingness to continue to expand our government deficits (whether they come from the -largely ficticious- social security trust fund or the government's general fund) ignores the very predictable economic consequences. Worse in both areas you ignore the fundamentals of our demography. Our population is ageing (though far less quickly than those of Europe), and the ratio of those paying taxes to both the social security "fund" and the government's general fund to those no longer employed and drawing benefits is steadily lowering.
Ever higher tax rates imposed on a (relatively) ever lower portion of the population - to support social benefits to an ever growing fraction is not a sustainable proposition - from several perspectives.
Your simplistic (I hesitate to say simple-minded) arithmetic is not nearly sufficient to back up your, frankly absurd, proposition. A magic wand is what you need.