the Postal Regulatory Commission, which oversees the industry, has found that the US Postal Service makes a profit from its contract with the company.
Friends of Mr Trump in the commercial property sector have also been urging him to protect them from digital retail giants as they see shopping malls closing and rents falling,
It is unprecedented for a sitting president to single out one company for such vicious attacks,
http://www.bbc.com/news/world-us-canada-43606088