I am not sure about not losing money. Please see https://about.usps.com/news/national-releases/2017/pr17_007.htm https://about.usps.com/news/national-releases/

I am not sure about not losing money. Please see https://about.usps.com/news/national-releases/2017/pr17_007.htm https://about.usps.com/news/national-releases/2017/pr17_007.... Summary: - operation cost reduced - holiday sales saw growth - first-class mail saw continued loss It is known USPS has been losing money for many years now due to the raise of emails and now social media and instant messaging. This is a strong reason some people proposed to privatize USPS instead.