within the time agreed upon by the United States, in Congress assembled.
ART. IX.--The United States, in Congress assembled, shall have the sole
and exclusive right and power of determining on peace and war, except in
the cases mentioned in the sixth Article; of sending and receiving
ambassadors; entering into treaties and alliances, provided that no
treaty of commerce shall be made, whereby the legislative power of the
respective States shall be restrained from imposing such imposts and
duties on foreigners as their own people are subjected to, or from
prohibiting the exportation or importation of any species of goods or
commodities whatever; of establishing rules for deciding, in all cases,