[cloudmountain]

Eminent domain.
Eminent domain is the compulsory purchase (United Kingdom, New Zealand, Ireland), resumption (Hong Kong), resumption/compulsory acquisition (Australia), or expropriation (South Africa, Canada) is the power to take private property for public use by a state or national government.
However, it can be legislatively delegated by the state to municipalities, government subdivisions, or even private persons or corporations when they are authorized to exercise functions of public character.

The property may be taken either for government use or by delegation to third parties who will devote it to public or civic use or, in some cases, economic development. The most common uses of property taken by eminent domain are for government buildings and other facilities, public utilities, highways, and railroads; however, it may also be taken for reasons of public safety, as in the case of Centralia, Pennsylvania. Some jurisdictions require that the condemnor offer to purchase the property before resorting to the use of eminent domain.

Heck, I learned this in the EIGHTH grade.

[Usagi_yo]

U.S Congress cannot delegate it’s legislative authority.