Trump vows to 'never let our Post Office fail' hours after threatening to let it die unless it hikes Amazon rates

· Soon after saying he would not permit a $10 billion loan to the US Postal Service unless it hikes its rates on Amazon, President Donald Trump tweeted on Friday that he will "never let our Post Office fail."
· The USPS is estimated to shutter in the summer unless there is significant monetary intervention, according to a...