Article III Section 2

The judicial Power shall extend to all Cases, in Law and Equity, arising
under this Constitution, the Laws of the United States, and Treaties made, or
which shall be made, under their Authority; to all Cases affecting
Ambassadors, other public Ministers and Consuls; to all Cases of admiralty
and maritime Jurisdiction; to Controversies to which the United States shall
be a Party; to Controversies between two or more States; between a State and
Citizens of another State; between Citizens of different States; between
Citizens of the same State claiming Lands under Grants of different States,
and between a State, or the Citizens thereof, and foreign States, Citizens or
Subjects. 

In all Cases affecting Ambassadors, other public Ministers and Consuls, and
those in which a State shall be Party, the supreme Court shall have original
Jurisdiction. In all the other Cases before mentioned, the supreme Court
shall have appellate Jurisdiction, both as to Law and Fact, with such
Exceptions, and under such Regulations as the Congress shall make. 

Trial of all Crimes, except in Cases of Impeachment, shall be by Jury; and
such Trial shall be held in the State where the said Crimes shall have been
committed; but when not committed within any State, the Trial shall be at
such Place or Places as the Congress may by Law have directed.