Which term is applied to a legislator who introduces a bill?

Which term is applied to a legislator who introduces a bill?
president pro tempore sponsor of the bill <? proponent of the bill director of the bill Who carries out the roles of chief diplomat, commander in chief, and chief executive in the United States?

  • the Secretary of State and the head of the joint chiefs
  • the Secretary of Defense and the five-star generals &lt<?
  • the Senate majority leader the president