September 19, 2025 · Recent development

The Senate confirmed Michael G. Waltz as U.S. Representative to the United Nations, with the rank of Ambassador, by a 47–43 vote.

The Senate confirmed Michael G. Waltz as U.S. Representative to the United Nations, with the rank of Ambassador, by a 47–43 vote.

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May 1, 2025 · Recent development

President Trump ended Waltz’s White House National Security Advisor tenure and announced that he would nominate Waltz to serve as U.S. Ambassador to t...

President Trump ended Waltz’s White House National Security Advisor tenure and announced that he would nominate Waltz to serve as U.S. Ambassador to the United Nations; Secretary of State Marco Rubio was assigned the national-security-adviser duties on an interim basis.

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Biography

Background & current role

Michael G. “Mike” Waltz served as President Trump’s National Security Advisor from the start of the second administration until May 1, 2025, when Trump moved him out of the White House role and nominated him for U.S. Ambassador to the United Nations. The Senate confirmed Waltz on September 19, 2025, and House historical records list him as U.S. Representative to the United Nations from 2025 to present.

Current record notes: {'id': 'waltz-un-confirmed-2025-09-19', 'date': '2025-09-19', 'display_date': 'September 19, 2025', 'subjects': ['office-role', 'foreign-policy-diplomacy'], 'summary': 'The Senate confirmed Michael G. Waltz as U.S. Representative to the United Nations, with the rank of Ambassador, by a 47–43 vote.'} {'id': 'waltz-nsa-role-change-2025-05-01', 'date': '2025-05-01', 'display_date': 'May 1, 2025', 'subjects': ['office-role', 'national-security-defense', 'foreign-policy-diplomacy'], 'summary': 'President Trump ended Waltz’s White House National Security Advisor tenure and announced that he would nominate Waltz to serve as U.S. Ambassador to the United Nations; Secretary of State Marco Rubio was assigned the national-security-adviser duties on an interim basis.'}

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Role snapshot

Position & relationship

Position / relationship
U.S. Ambassador to the United Nations; former White House National Security Advisor
Affiliation / context
Republican / Trump Administration
Directory
Former / Recent
Profile status
Changed administration role
Service dates
National Security Advisor: January 20, 2025 – May 1, 2025; U.N. Ambassador: September 19, 2025 – present
Role history & transitions

Documented current/future role notes

  • The Senate confirmed Michael G. Waltz as U.S. Representative to the United Nations, with the rank of Ambassador, by a 47–43 vote.
  • President Trump ended Waltz’s White House National Security Advisor tenure and announced that he would nominate Waltz to serve as U.S. Ambassador to the United Nations; Secretary of State Marco Rubio was assigned the national-security-adviser duties on an interim basis.
Claims & evidence

Evidence tracker

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