The U.S. secretary of state is the president’s top foreign-policy adviser and the country’s chief diplomat, leading the State Department and representing the United States abroad.

Federal vs. state “secretary of state”

In the U.S., “secretary of state” can mean two different jobs, depending on context.

  • At the federal level, the secretary of state runs foreign policy and diplomacy.
  • At the state level (like Georgia or Arizona), the secretary of state is usually a domestic official, often in charge of elections, business records, and various administrative functions.

Below I’ll focus mainly on the federal role, then briefly note the state-level version.

What the U.S. secretary of state does (federal)

1. Chief foreign-policy adviser

  • Advises the president on all major foreign affairs questions, from wars and alliances to trade and climate diplomacy.
  • Helps shape what U.S. foreign policy is (the strategy) and how it is carried out (the day‑to‑day diplomacy).

Example: Before a summit with another country, the secretary briefs the president, recommends goals, and then follows up on whatever is agreed.

2. America’s top diplomat

  • Represents the United States in meetings with foreign leaders, international organizations, and global summits.
  • Negotiates and signs treaties and other international agreements on behalf of the U.S., subject to Senate approval where required.
  • Tries to prevent or resolve conflicts, sometimes mediating peace talks between other countries.

3. Head of the State Department

  • Runs the U.S. Department of State, which includes embassies, consulates, and the Foreign Service around the world.
  • Oversees tens of thousands of diplomats and staff, plus agencies like the U.S. Agency for International Development (USAID) that handle development and humanitarian work.

Key internal responsibilities include:

  • Managing the U.S. diplomatic corps and foreign service officers.
  • Setting priorities for regions (e.g., Europe, Asia, Middle East) and issues (e.g., human rights, cyber, climate).
  • Coordinating with other national security officials, such as the secretary of defense and the national security adviser, often through the National Security Council.

4. Protecting Americans abroad

  • Oversees issuing U.S. passports and provides consular services to citizens traveling or living overseas.
  • Helps citizens in trouble abroad, such as during arrests, natural disasters, or political unrest, often coordinating evacuations or other protection.
  • Works with other countries on extraditions and legal cooperation involving people wanted by U.S. or foreign authorities.

5. Communicating U.S. foreign policy

  • Explains U.S. positions to Congress, through hearings and briefings, and to the public, through speeches and press conferences.
  • Represents the U.S. in international organizations like the United Nations or regional bodies, either personally or through ambassadors.

How important is the job?

  • The secretary of state is one of the highest-ranking cabinet officials and is fourth in the presidential line of succession (after the vice president, speaker of the House, and president pro tempore of the Senate).
  • Because foreign policy can affect everything from wars to trade to climate agreements, this role is often seen as one of the most influential in the U.S. government.

State-level secretaries of state (briefly)

In many U.S. states, a “secretary of state” is a completely different position with mostly domestic duties.

Common responsibilities include:

  • Serving as the state’s chief election official, overseeing voter registration, ballots, and sometimes certification of election results.
  • Maintaining business and corporate records (like LLC filings and trademarks).
  • Keeping official state documents and archives.

These state secretaries of state do not run foreign policy; they are more like top record‑keepers and election administrators for their state.

Federal vs. state secretary of state (at a glance)

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Aspect U.S. secretary of state (federal) State secretary of state
Main focus Foreign policy and diplomacy.Elections, records, and business filings within one state.
Who they advise The U.S. president on international issues.The state governor or state government on administrative matters.
Public role America’s chief diplomat, negotiates treaties, represents U.S. abroad.Often the chief election official, manages voting processes and public records.
Line of succession Fourth in line to the U.S. presidency.State-level succession varies; often not near the top.
**TL;DR:** The U.S. secretary of state is the president’s main foreign-policy adviser and the country’s top diplomat, running the State Department and representing America abroad, while state secretaries of state mostly handle elections and public records at the state level.