Confederate district courts were authorized by Article III, Section 1, of the Confederate Constitution, and President Davis appointed judges within the individual states of the Confederate States of America. In many cases, the same US Federal District Judges were appointed as Confederate States District Judges. Confederate district courts began reopening in early 1861, handling many of the same type cases as had been done before. Prize cases, in which Union ships were captured by the Confederate Navy or raiders and sold through court proceedings, were heard until the blockade of southern ports made this impossible. After a Sequestration Act was passed by the Confederate Congress, the Confederate district courts heard many cases in which enemy aliens (typically Northern absentee landlords owning property in the South) had their property sequestered (seized) by Confederate Receivers.