CONSTITUTION       OF THE UNITED        STATES.         13

general welfare of the United States; but all duties, imposts and exclsei
shall be uniform throughout the United States;
  To borrow money money on the credit of the United States;
  To regulate commerce with foreign nations, and among the several States,
and with the Indian tribes;
  To establish an uniform rule of naturalization, and uniform laws on the
subject of bankruptcies throughout the United States;
  To coin money, regulate the value thereof, and of foreign coin, and fix
the
standard of weights and measures;
  To provide for the punishment of counterfeiting the securities and current
coin of the United States;
  To establish post offices and post roads;
  To promote the progress of science and useful arts, by securing for limited
times to authors and inventors the exclusive right to their respective writings
and discoveri.S
  To cont:'_:he :ribanals t.nf-:-.or to :the Supreme Court;
  To define and punish piracies and felonies committed on the high seas,
and
  offenses azalust the law of nations ;
  To declare war, grant letters of marque and reprisal, and make rules con-
  cerning captures on land and water;
  To raise and support armies, but no appropriation of money to that use
  shall be for a longer term than two years;
  To provide and maintain a navy;
  To make rules for the government and regulation oi rie rana and naval
  forces;
  To provide for calling forth the militia to execute the laws of the Union;
  suppress insurrections and repel invasions;
  To provide for organizing, arming, and disciplining the militia, and for
  governing such part of them as may be employed in the service of the United
  States, reserving to the States respectively, the appointment of the officers,
  and the authority of training the militia according to the discipline pre.
  scribed by Congress;
  To exercise exclusive legislation in all cases whatsoever, over such district
  (not exceeding ten miles square) as may, by cession of particular States,
and
  the acceptance of Congress, become the seat of government of the United
  States, and to exercise like authority over all places purchased by the
con-
  sent of-the legislature of the State in which the same shall be. for the
erec-
  tion of forts, magazines, arsenals, dockyards, and other needful buildings;
  and
  To make all laws which shall be necessary and proper for carrying into
  execution the foregoing powers, and all other powers vested by this Constitu-
  tion in the Government of the .United States, or in any department or officer
  thereof.
    SECTION 9. The migration or importation of such persons as any of the
  States now existing shall think proper to admit, shall not be prohibited
by the
  Congress prior to the year one thousand eight hundred and eight, but a
tax or