The American's football membership includes Army and Navy alongside programs such as Memphis, Tulane, East Carolina, North Texas and UTSA. Those are potential future conference opponents under the announced move; JMU has not published a new football schedule through this announcement.
Independent coverage from the Deseret News places the move in the Dukes' recent football rise, following the program's time under Curt Cignetti and Bob Chesney. The football success supplies context for the conference decision. Monday's approved invitation and the 2028 deadline are the immediate change.
Pete Thamel's Monday reporting described the board vote as the move emerged. The university's announcement and FAQ now supply the formal decision and funding terms.
Sources
JMU: conference invitation accepted · JMU Athletics: transition questions · JMU leaves Sun Belt