Calvin Coolidge (born John Calvin Coolidge Jr.; /ˈkuːlɪdʒ/; July 4, 1872 – January 5, 1933) was an American politician and lawyer who served as the 30th president of the United States from 1923 to 1929. A Republican lawyer from New England, born in Vermont, Coolidge worked his way up the ladder of Massachusetts state politics, eventually becoming governor of Massachusetts. His response to the Boston Police Strike of 1919 thrust him into the national spotlight and gave him a reputation as a man of decisive action. In 1896, Coolidge campaigned for Republican presidential candidate William McKinley, and the next year he was selected to be a member of the Republican City Committee. In 1919, in reaction to a plan of the policemen of the Boston Police Department to register with a union, Police Commissioner Edwin U. Curtis announced that such an act would not be tolerated. In August of that year, the American Federation of Labor issued a charter to the Boston Police Union.