What is United States Secretary of State?
{{Infobox official post|post=United States Secretary|body=State|flag=Flag of the United States Secretary of State.svg|flagborder=yes|flagsize=130|flagcaption=Flag of the secretary of state|insignia=Seal of the United States Secretary of State.svg|insigniasize=120|insigniacaption=Seal of the secretary of state|image=Official portrait of Secretary Marco Rubio.jpg|incumbent=[[Marco Rubio]]|incumbentsince=January 21, 2025|department=[[United States Department of State]]|style=Mr. Secretary (informal)<br>[[The Honourable#United States|The Honorable]]<ref>{{Cite web|title=Protocol Reference|url=https://www.state.gov/protocol-reference/|access-date=January 31, 2021|website=United States Department of State|language=en-US|archive-date=January 30, 2021|archive-url=https://web.archive.org/web/20210130184128/https://www.state.gov/protocol-reference/|url-status=live}}</ref> (formal)<br>[[Excellency|His Excellency]]<ref>{{Cite web|date=January 29, 2021|title=United Nations Heads of State, Protocol and Liaison Service|url=https://protocol.un.org/dgacm/pls/site.nsf/files/HSPMFM/$FILE/Hspmfm.pdf|url-status=dead|archive-url=https://web.archive.org/web/20200914205358/https://protocol.un.org/dgacm/pls/site.nsf/files/HSPMFM/$FILE/Hspmfm.pdf|archive-date=September 14, 2020|access-date=January 31, 2021|website=United Nations}}</ref> (diplomatic)|member_of=[[Cabinet of the United States]]<br>[[United States National Security Council]]|reports_to=[[President of the United States]]|seat=[[Harry S Truman Building]]<br>[[Washington, D.C.]]|appointer=The [[President of the United States|President]]|appointer_qualified=with [[United States Senate|Senate]] [[advice and consent]]|constituting_instrument={{UnitedStatesCode|22|2651}}|precursor=[[United States Secretary of Foreign Affairs|Secretary of Foreign Affairs]]|formation={{start date and age|1789|7|27}}|first=[[Thomas Jefferson]]|succession=[[United States presidential line of succession|Fourth]]<ref>{{cite web |url=https://www.law.cornell.edu/uscode/text/3/19 |title=3 U.S. Code § 19 – V