The Constitution of the Commonwealth of Pennsylvania is the supreme law within the American state of Pennsylvania. All acts of the General Assembly, the governor, and each governmental agency are subordinate to it. Since 1776, Pennsylvania's Constitution has undergone five versions. Pennsylvania held constitutional conventions in 1776, 1789–90, 1837–38, 1872–73, and 1967–68. The current Constitution entered into force in 1968, and has been amended numerous times.