(CNN) - U.S. Rep. Trey Radel of Florida plans to hand House Speaker John Boehner his letter of resignation Monday, according to a senior Republican leadership aide.
The GOP's freshman lawmaker returned to Capitol Hill from a leave of absence after pleading guilty to cocaine possession.
Radel was caught buying cocaine from an undercover federal agent in Washington, DC, and spent nearly a month in a substance abuse program in Florida last year.
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