Washington (CNN) Wyoming Sen. Mike Enzi announced on Saturday that he is not running for re-election and will retire at the end of his current term in office.

Enzi is the senior senator from Wyoming and currently serves as the chairman of the Senate Budget Committee. He has served as a senator for 22 years after first winning election to the Senate in 1996.

The Republican senator would have been up for re-election in 2020.

Enzi made the announcement at a press conference in Gillette, Wyoming.

"I have much to get done in the next year and a half," he said, according to text of his announcement speech . "I want to be able to focus on budget reform to get control of our national debt; Several small business initiatives; Protecting and diversifying Wyoming's Jobs. I don't want to be burdened with the distractions of a campaign. After this term I will find other ways to serve."

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