They only have one means left to come up with more money. In this country, the Federal Reserve Bank. They simply order the bureaucrats at the Fed to make money. How they do it is a bit convoluted but they get the job done. Therefore their constituents can not know what inflation is let alone what the cause or causes are.
Serious inflation is caused by politicians and their bureaucrats.
And, serious inflation causes major economic downturns. They decrease the acceptance of your dollars as a medium of exchange. This usually increases interest rates and decreases economic activity. They decrease the amount of value, purchasing power, you had stored in your dollars. This is the arbitrary, and for many people unseen, taking of your property without your consent and without compensation.