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Thomas A. Shannon, Jr.
Secretary of State · 2017
Thomas A. Shannon, Jr., Secretary of State. Thomas Alfred Shannon Jr. is an American diplomat who served as Under Secretary of State for Political Affairs from 2016 to 2018. In early 2017, Shannon served as acting United States secretary of state until President Donald Trump's nominee, Rex Tillerson, was confirmed. He was also acting deputy secretary of state of the United States until the Senate confirmed President Trump's nominee, John J. Sullivan.
Positions
- Secretary of State2017-01-20–2017-02-01
Biography
Thomas Alfred Shannon Jr. is an American diplomat who served as Under Secretary of State for Political Affairs from 2016 to 2018. In early 2017, Shannon served as acting United States secretary of state until President Donald Trump's nominee, Rex Tillerson, was confirmed. He was also acting deputy secretary of state of the United States until the Senate confirmed President Trump's nominee, John J. Sullivan.
From Wikipedia (CC BY-SA).
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From Senate roll call votes, Wikidata, Wikipedia and Office of Government Ethics records.
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Capitol Receipts, “Thomas A. Shannon, Jr.: Secretary of State,” https://www.capitolreceipts.com/appointee/wQ7786914/thomas-a-shannon-jr (accessed 2026-10-13).