Congress can establish an army and navy. They can make post offices. They can declare wars, and they can raise cash - all the essential ingredients for a nation. Now, section nine, coming up, puts limits on congress. The migration or importation of such persons as any of the states now existing shall not be prohibited by the congress prior to the year one thousand 808. But a tax or duty may be imposed on such importation, not exceeding ten dollars for each person. No bill of attainder or ex post facto law shall be passed. An irregular statement and account of the receipts and expenditures of all public money shall be published from time to time. And no title of nobility shall