PORTLAND — A Vancouver, Wash., man accused of sending threatening letters laced with white powder to Congress members has pleaded guilty to mailing such a letter to U.S. Sen. Barbara Mikulski.
Christopher Lee Carlson entered his plea Tuesday in federal court in Portland.
The Oregonian reports that the letter to the Maryland Democrat’s Baltimore office was part of a February 2012 mass mailing.
Sentencing for the 41-year-old man was set for Feb. 4. The newspaper says he faces a maximum…