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Grassley becomes Senate president pro tempore

On 3 January 2019 Chuck Grassley, the longest-serving Republican senator, was sworn in as president pro tempore of the U.S. Senate, a role traditionally given to the most senior senator.

Chuck Grassley (Wikimedia Commons portrait; person avatar reused as fact cover, land-pack1 pattern).

Sources: [1][2][3]

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On 3 January 2019 Chuck Grassley, the longest-serving Republican senator, was sworn in as president pro tempore of the U.S. Senate, a role traditionally given to the most senior senator. The post placed him third in the line of presidential succession. He took the position again in January 2025.

Who was responsible

Contribution type and responsibility level for each recorded actor — not sole-author shorthand.

  • Chuck Grassley

    Person

    Direct responsibility

    verified

    Grassley becomes Senate president pro tempore. Actor role on this event; contribution size permanently_blocked (no sourced fraction). Contribution size is permanently_blocked (no sourced fraction); provisional 0.4 stored because contributions.size is NOT NULL.

What changed

Fact → Driver → Indicator. Relationship strength orders the paths; it is not the observed indicator movement.

No public driver impacts are listed for this fact.

Evidence

The sources behind this fact and its verification state.

Verified3 sources on file
  1. 1.cbs2iowa.com — sourcecbs2iowa.com · verified
  2. 2.rollcall.comchecked 2026-10-15 GET 200, final URL = original (no non-trivial redirect), claim in text: grassley+president pro tempore · verified
  3. 3.kcrg.comchecked 2026-10-15 GET 200, final URL = original (no non-trivial redirect), claim in text: grassley+president pro tempore · verified

Causal path

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No causal path is recorded: this fact is not linked to a driver.

Cite this page

Factrail. (2026). Grassley becomes Senate president pro tempore. Factrail. https://factrail.ai/facts/grassley-president-pro-tempore-2019-01-03

https://factrail.ai/facts/grassley-president-pro-tempore-2019-01-03

Accessed 15 October 2026.

By the Factrail desk · Method: how we source and score · Last reviewed

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