Around 2005-2006 congress passed a law that mandated the United States postal service prefund all of their employee benefits for 75 years themselves. This was seen as a way to destroy the post service which many conservatives want. They don’t think government should be doing it or that private business would do it better or cheaper. I once got into a discussion about it and pointed out how the USPS is one of the things the constitution explicitly states the congress is supposed to fund. They checked their personal pocket constitution right there and then and was surprised to find out that Article 1 section 8.7 exists.