The USPS is one of those institutions that disproportionately benefits the rural population. Part of the reason it’s cumbersome and unprofitable is that they deliver mail to pretty much everyone, including VERY out of the way places where it wouldn’t be profitable for a private company to offer service. Since so much of his voter base is rural I __hope__ he won’t absolutely wreck it out of self interest, but I’ve mistakenly expected him to face consequences enough times that I have no clue.
As with plenty of other things he is doing, this is illegal. The President of the United States is engaging in flagrantly illegal behavior on a daily basis as 30% of the country cheers him on.