| July 1, 1836 5 Stat. 61 |
The act organized Michigan as a judicial district and authorized one judgeship for the U.S. district court. The district court in Michigan, not being assigned to a judicial circuit, was granted the same jurisdiction as U.S. circuit courts, except in appeals and writs of error, which were the jurisdiction of the Supreme Court. The act became effective upon the admission of the State of Michigan on January 26, 1837. |
| March 3, 1837 5 Stat. 176 |
This act repealed the circuit court jurisdiction of the U.S. District Court for the District of Michigan, assigned the District of Michigan to the Seventh Circuit, and established a U.S. circuit court for the district. |
| July 15, 1862 12 Stat. 576 |
Congress reorganized the circuits and assigned the District of Michigan to the Eighth Circuit. |
| January 28, 1863 12 Stat. 637 |
Congress reorganized the Seventh and Eighth Circuits and assigned the District of Michigan to the Seventh Circuit. |
| February 24, 1863 12 Stat. 660 |
Michigan divided into two judicial districts, the Eastern and the Western, with one judgeship authorized for each district. The district judge serving the District of Michigan was reassigned to the Eastern District of Michigan. |
| July 23, 1866 14 Stat. 209 |
Congress reorganized the circuits and assigned the districts of Michigan to the Sixth Circuit. |
| September 14, 1922 42 Stat. 837 |
One temporary judgeship authorized for the Eastern District. |
| February 17, 1925 43 Stat. 949 |
Congress authorized one judgeship for the Western District and provided that the judge appointed to this position would be treated as if senior in commission to the sitting judge. The act also provided that the sitting judge not be replaced when service terminated. |
| March 3, 1927 44 Stat. 1380 |
One additional judgeship authorized for the Eastern District. |
| February 20, 1931 46 Stat. 1197 |
One additional judgeship authorized for the Eastern District. |
| August 19, 1935 49 Stat. 659 |
The temporary judgeship authorized for Eastern District by the act of September 14, 1922, made permanent. |
| May 31, 1938 52 Stat. 584 |
One additional judgeship authorized for the Eastern District. |
| February 10, 1954 68 Stat. 8 |
One additional judgeship authorized for the Eastern District, and one additional judgeship authorized for the Western District. |
|
May 19, 1961 75 Stat. 80 |
Two additional judgeships authorized for the Eastern District. |
| June 2, 1970 84 Stat. 294 |
Two additional judgeships authorized for the Eastern District. |
| October 20, 1978 92 Stat. 1629 |
Three additional judgeships authorized for the Eastern District, and two additional judgeships authorized for the Western District. |
| July 10, 1984 98 Stat. 333 |
Two additional judgeships authorized for the Eastern District. |
| December 1, 1990 104 Stat. 5089 |
One temporary judgeship authorized in the Western District. This position was never made permanent. |