It would only bankrupt America if Americans demanded social welfare at the same level as other 1st world nations. Instead of nurses we get soldiers, instead of housing for the poor we get army bases. If we demanded both, then maybe we'd go bankrupt.
One of the many problems with that is that the cost of the soldiers and military bases only goes up and at breakneck pace. The latest defense spending bill came with an increase of $85 billion. It'll go up again next year.
When I think about that increase it hurts to remember that when Bernie Sanders proposed free college for everyone people said the $60-70 billion price tag was too high. Where would we get the money? Then no one blinked when we increased defense spending by an even greater amount.