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States, and to exercise like authority over all places purchased, by the consent of the legislature of the State in which the same shall be, for the erection of forts, magazines, arsenals, dock-yards, and other needful buildings:—and,
17. To make all laws which shall be necessary and proper for carrying into execution the foregoing powers, and all other powers vested by this Constitution in the Government of the United States, or in any department or officer thereof.
SECTION 9.
1. 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 duty may be imposed on such importation, not exceeding ten dollars for each person.
2. The privilege of the writ of habeas corpus shall not be suspended, unless when, in cases of rebellion or invasion, the public safety may require it.
3. No bill of attainder, or ex post facto law, shall be passed.
4. No capitation or other direct tax shall be laid, unless in proportion to the census or enumeration herein before directed to be taken.
5. No tax or duty shall be laid on articles exported from any State. No preference shall be given by any regulation of commerce or revenue to the ports of one State over those of another: nor shall vessels bound to or from one State, be obliged to enter, clear, or pay duties in another.
6. No money shall be drawn from the treasury, but in consequence of appropriations made by law; and a regular statement and account of the receipts and expendi-
