Utah Republican Sen. Orrin Hatch to retire

Senator Orrin Hatch (R-UT) speaks to the crown before U.S. President Donald Trump arrives at the Rotunda of the Utah State Capitol on December 4, 2017 in Salt Lake City, Utah. 

After four decades in the U.S. Senate, the longest-serving Republican senator in history, Utah’s Orrin Hatch, announced Tuesday he would not seek re-election at the end of his term in November.

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Hatch announced his decision in a video posted to Twitter.