It may be thought, even though the Constitution does not give the House of Representatives a direct negative on all the important acts of the government, that it does so indirectly through its control over the purse. An examination of the system with reference to this question, however, reveals the fact that the control of the House over taxation and expenditure is narrowly limited. A revenue law is subject to no constitutional limitation, and when once enacted remains in force until repealed by subsequent legislation. Assuming that a revenue system has been established which is sufficient for the needs of the government, the House can exercise no further control over income. It can not repeal it, or modify it in any way without the consent of the President and Senate. Turning now to the matter of expenditure, we find that the Constitution allows permanent provision to be made for the needs of the government, with the single exception of the army, for the support of which no funds can be appropriated for a longer period than two years. The policy of permanent appropriations has not yet been applied to the full extent permitted by the Constitution, but it has been carried much further than a consistent adherence to the doctrine of popular control over the budget would warrant. The practice could easily be extended until every want of the government except the expenses of the army, even including the maintenance of the navy, had been provided for by permanent appropriations. And it may be added that with the increasing desire for stability which comes with the development of vast business interests, the tendency is strongly in that direction.