"How do the bankers figure in this..."
1. They simply donate massive amounts of money to both political parties so that whoever wins will owe them favors
2. To avoid raising taxes (which will make the voters unhappy), the bankers simply print more money & give it to the politicians who in turn can then spend it any way they want so as to "buy votes" for re-election
Both Republicans & Democrats are guilty of "buying votes" & voting to increase the size of our debt as well as the size & scope of government. We really don't have a viable political party that pushes for a balanced budget, smaller government & sound money.