The White House is expected to announce Wednesday that President Joe Biden will nominate longtime Milwaukee Mayor Tom Barrett to serve as the United States ambassador to Luxembourg, according to media reports.

Barrett first became mayor of Milwaukee in 2004, when he defeated incumbent Mayor Marvin Pratt, and was re-elected four times since. He was a candidate for Governor of Wisconsin facing off against former Gov. Scott Walker twice, the last time in the 2012 recall election.

Luxembourg is a Western European nation with a population of approximately 620,000 people that lies between France and Germany. One of the smallest countries in Europe, the official language of the country is Luxembourgish, along with administrative languages of German and French.

Barrett’s new position is subject to U.S. Senate confirmation.

Once Barrett steps down, Common Council President Cavalier Johnson would become acting mayor through the spring 2024 election.