At the conclusion of his political career, he held the highest political office by a Polish American in U.S. history, and also was the only Polish American ever nominated by a major party for vice president. On the 100th birthday of Edmund Muskie, U.S. Senator Angus King spoke on the floor of the United States Senate in memoriam. King noted the following: "if you would see Ed Muskie's memorial, look around you. Take a deep breath. Experience our great rivers. Experience the environment that we now have in the country that we treasure." Muskie has received the keys to all three major cities in Maine: Portland, Lewiston, and Augusta. He was given honorary citizenship to the State of Texas in 1968. Numerous days have been named "Edmund S. Muskie Day": September 25, 1968 (Michigan), January 20, 1980 (New York), March 28, 1988 (Maine), March 1928, 1994 (Maine), and March 20, 1995 (Maine). In 1987, the Maine State Legislature enacted Statute §A7 enacting "Edmund S. Muskie Day" on March 28. The statute was amended in 1989; Edmund S. Muskie Day is celebrated annually and is a public holiday in Maine.