He may veto any bill passed by the assembly, or in the case of a bill making appropriations of money he may veto any item of it, and no bill or item of an appropriation bill which he vetoes within five days (Sunday excepted) after it has been presented to him, can become a law or part of a law unless passed over his veto in each house by a two-thirds vote of the members present.
Most of Johnsons vetoes were promptly overruled by the large majority opposed to him in both houses, but the vetoes of all the other presidents have generally prevented the enactment of the bills of which they disapproved.
He may veto appropriation bills by items, but any of his vetoes may be overruled by a two-thirds vote of each house.
There was to be, under this plan, an executive chosen by the national legislature, to be ineligible for a second term, to have general authority to execute the national laws and to have the executive rights vested in Congress by the Confederation; and the executive with a convenient number of the national judiciary was to compose a Council of Revision, with a veto power on acts of the national legislature and on the national legislature's vetoes of acts of state legislatures - but the national legislature might pass bills (or vetoes of state legislation) over the action of the Council of Revision.
In May 1872 something was done towards alleviating the odious Reconstruction laws for dragooning the South, which had been passed by Congress in spite of the vetoes of President Johnson.