"Michigan" was reactivated in 1921 for another cruise to the Caribbean, departing on 4 April. She returned to Philadelphia on 23 April; shortly thereafter, the ship became embroiled in a minor scandal. The ship's commanding officer at the time, Clark Daniel Stearns, instituted a series of sailors' committees on 3 May to ease tensions between officers and the crew. The commanders of the Atlantic Fleet and "Michigan"s squadron decided that the committees were a threat to discipline and evidence of Marxist influences. They contacted Edwin Denby, then the Secretary of the Navy, who relieved Stearns of command. On 28 May, she picked up another group of midshipmen for another training cruise. This voyage took the ship to Europe, with stops in a number of ports, including Christiana, Norway, Lisbon, Portugal, and Gibraltar. She returned to Hampton Roads via Guantanamo Bay on 22 August.