If the presadent vetoes a bill what process must happen for the bill to become a law

If the President vetoes a bill, It will go through to the Congress and they may attempt to override the veto. If both the Senate and the House pass the bill by a two-thirds majority, the President's veto is overruled, and the bill becomes a law.

Explanation: That is why the president doesn't have all the authority to choose if it weren't for the other houses

the secretary of state, appointed by the president with the advice and consent of the senate, is the president's chief foreign affairs adviser. the secretary carries out the president's foreign policies through the state department and the foreign service of the united states.