As U.S. President Donald Trump and his centi-billionaire ally Elon Musk revive the right-wing dream to privatize the public mail system, an analysis released Tuesday details how the pain already inflicted on over 100 million Americans by the for-profit delivery industry will only get worse if Trump's plan succeeds.

Americans already have the option of using private companies like FedEx and UPS to mail packages, and in about 25,000 ZIP codes where 102 million people live—about a third of the U.S. population—the corporations already pile on extra charges for deliveries, according to the report by the Institute for Policy Studies (IPS).