The Washington Post reported Friday that President Trump "personally pushed" the postal service to double Amazon's shipping rates.

The Washington Post reported Friday on President Trump's apparent efforts to change the economics between e-commerce companies and the United States Postal Service.
"Trump has personally pushed U.S. Postmaster General Megan Brennan to double the rate the Postal Service charges Amazon.com and other firms to ship packages, according to three people familiar with their conversations, a dramatic move that probably would cost these companies billions of dollars," the Post noted.
"Brennan has so far resisted Trump's demand, explaining in multiple conversations occurring this year and last that these arrangements are bound by contracts and must be reviewed by a regulatory commission," the Post goes on to add, citing sources.
This report comes weeks after Trump's many tweets targeting online retailers.
"States and Cities throughout our Country are being cheated and treated so badly by online retailers. Very unfair to traditional tax paying stores!" Trump wrote in one tweet.
While the president didn't specifically mention retail giant Amazon in that tweet, he has gone after the company on multiple occasions in the recent past.
"I have stated my concerns with Amazon long before the Election. Unlike others, they pay little or no taxes to state & local governments, use our Postal System as their Delivery Boy (causing tremendous loss to the U.S.), and are putting many thousands of retailers out of business!" Trump tweeted in late March.
Media outlets have questioned some of Trump's assertions on the matter.
According to Vox, while the Postal Service is "bleeding money...delivering packages, it turns out, is a growth business, and it actually makes the Postal Service money."