A proposal in 1991 would have moved the city's main post office to a triangular lot along State Street, but this plan was never put in place and that site is now home to Dr. Martin Luther King, Jr. Plaza. The post office suffered an anthrax scare during the U.S. anthrax attacks of 2001, when a postal worker discovered brown powder in a sorting bin. Another closing plan was announced in 2009, where the building would be sold and its operations consolidated with the other three existing offices in Racine. Since then, the downtown office's staff and open hours have both been reduced, but it remains open as of May 2017.