The treaty-making power applies to all matters which may
properly be the subject of negotiations between the two
governments. This power has importance, especially on
international streams. Important functions with respect to
international streams have been vested in international agencies
created pursuant to the provisions of treaties. This power is
also the basis for treaties with Indian Tribes through which
certain rights to use of water have been reserved. However, the
federal government through the treaty-making power cannot
restrict the police power of a sovereign. In Asakura v. Seattle,
265 U.S. 332 (U.S. 1924), the court observed that “The treaty-
making power of the United States is not limited by any express
provision of the Constitution, and, though it does not extend so
far as to authorize what the Constitution forbids, it does
extend to all proper subjects of negotiation between our
government and other nations. Treaties for the protection of
citizens of one country residing in the territory of an