WASHINGTON — Sen. Michael Crapo, R-Idaho, who is widely expected to serve as ranking member on the Senate Banking Committee in the new Congress, pleaded guilty to a misdemeanor drunken driving charge on Friday.

The Idaho Republican was sentenced to 180 days, all of them suspended, and must pay a $250 fine. He was arrested on Dec. 23 for driving above the legal blood alcohol limit after being pulled over for running a red traffic light in Alexandria, Va.

Crapo, a Mormon who has previously said he does not drink alcohol in accordance with church practices, will have his license suspended for a year and is required to complete an alcohol safety program. He said in a statement Friday that he was "profoundly sorry for the pain and embarrassment" he caused.

Senate Republicans announced committee assignments for the 113th Congress on Thursday, and committee members will meet to elect their ranking members. Crapo is the second most senior Republican on the committee, and is in line to replace Richard Shelby, R-Ala., the outgoing ranking member.

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