Two problems with the Petrodollar are the Federal Reserve, a private bank, has control over the currency and the artificial edification of the dollar by making it the worlds reserve currency allows business to offshore all actual economic activity and wealth generation as they extract the wealth of others to fill their own coffers. If we made Congress do its job as defined in Article I of the Constitution, there wouldn't be a Federal Reserve and if we generated our own wealth in America and not rely on overseas sources the money would have the value of our labor, not some arbitrary value based on forced extraction of foreign wealth.