2. In addition to managing the State Department, the secretary of state is the nation's chief diplomat.
manages the defense and military departments.
O is the national security advisor.
advices and assists the President in the conduct of foreign policy.

Under the Constitution, the President of the United States determines U.S. foreign policy. The Secretary of State, appointed by the President with the advice and consent of the Senate, is the President's chief foreign affairs adviser.Analogous to a foreign minister, the secretary of state serves as the federal government's chief diplomat and representative abroad, and is the first Cabinet official in the order of precedence and in the presidential line of succession.

lend lease program was passed by congress on march 11, 1941. the president could ship weapons, food, or stuff to any country whose struggle against the axis assisted u.s. defense

state law

most seat belt laws in the united states are left to the states. however, the first seat belt law was a federal law.