Congress to pass a bill for it to become law, subject to the veto power of the president of the United States. Under Section 7, the president can veto a bill, but Congress can override the president's veto with a two-thirds vote of both chambers. Section 8 lays out the powers of Congress. (Taxes are apportioned by state population) It includes several enumerated powers, including the power to lay and collect "taxes, duties, imposts, and excises" (provided duties, imposts, and excises are uniform throughout the US), "to provide for the common defense and general welfare of the United States," the power to regulate interstate and international commerce, the power to set naturalization laws, the power to coin and regulate money, the power to borrow money on the credit of the United States, the power to establish post offices and post roads, the power to establish federal courts inferior to the Supreme Court, the power to raise and support an army and a navy, the power to call forth the militia "to execute the laws of the Union, suppress insurrections, and repel invasions" and to provide for the militia's "organizing, arming, disciplining...and governing" and granting Congress the power to declare war. Section 8 also provides Congress the power to establish a federal district to serve as the national capital and gives Congress the exclusive power to administer that district. In addition to various enumerated powers, Section 8 grants Congress the power to make laws necessary and proper to carry out its enumerated powers and other powers vested in it. Section 9 places various limits on the power of Congress, banning bills of attainder and other practices. Section 10 places limits on the states, prohibiting them from entering into alliances with foreign powers, impairing contracts, taxing imports or exports above the minimum level necessary for inspection, keeping armies, or engaging in war without the consent of Congress. Section 1: Legislative power vested in Congress Section 1 is a vesting clause that bestows federal legislative power exclusively to Congress. Similar clauses are found in Articles II and III. The former confers executive power upon the president alone, and the latter grants judicial power solely to the federal judiciary. These three articles create a separation of powers among the three branches of the federal government. This separation of powers, by which each branch may exercise only its own constitutional powers and no others, is