Things that are considered treason are planning war, harboring national enemies, etc. In order to be accused of treason, you will need 2 or more witnesses against the accused or an open confession.
Answer:
The postal clause gave the power to the congress To establish and manage Post Offices and post Roads. In order to give this power, the federal government has to provide the congress with proper funding.
In today's day and age, sending letters through post office is extremely inefficient. You can achieve the same result by using Email which cost you nothing and require much lesser effort.
As for delivery that contain physical goods, Delivery companies that is operated by the private sector tend to do it much more efficiently compared to the government. They can deliver the goods with a much faster time and less rate of damage goods.
Because of this, that Funding can be allocated to other government programs instead. (maybe to health care or public infrastructure)
Restorative justice is the justice which deals not only with the war crimes but with the emotional and other influences it had on relationships, community, and people. Its three principles are:
Repair of the harm
Encounter of the two parties
Transformation of the relationships between people, and communities.