WASHINGTON, D.C. — President Donald Trump said Friday that he won’t approve a $10 billion loan for the U.S. Postal Service unless the agency raises charges for Amazon and other big shippers to four to five times current rates. “The Postal Service is a joke because they’re handing out packages for Amazon and other internet companies and every time they bring a package, they lose money on it,” Trump told reporters in the Oval Office. The president was responding to a question about reports his administration plans to force major changes in postal operations as the price for approving a $10 billion loan that was included in the government’s $2 trillion economic rescue package. Under the rescue package legislation, Treasury Secretary Steven Mnuchin must approve the loan before the Postal Service can receive the money.