Federal Judgeship Act of 2000 - Directs the President to make appointments to specified additional permanent and temporary judgeships in various U.S. circuit courts of appeal and district courts.

Establishes a judicial district for: (1) the Northern Mariana Islands; and (2) the Virgin Islands comprising two divisions (the Saint Croix Division and the Saint Thomas and Saint John Division). Includes the Northern Mariana Islands within the ninth judicial circuit.

Authorizes the Chief Judge of the ninth circuit to assign judges of courts of record of the Northern Mariana Islands or Guam to serve temporarily as a judge in the United States District Court for the Northern Mariana Islands when necessary. Grants such designated judges the powers of a magistrate judge.

Authorizes the judges of the District Court of the Northern Mariana Islands to be summoned biennially to judicial conferences. Repeals provisions: (1) directing that such a judge who retires from office after meeting specified age and service requirements receive an annuity equal to the salary received at the time of retirement during the remainder of the judge's lifetime; and (2) granting the U.S. Court of Appeals for the Federal Circuit exclusive jurisdiction of an appeal from an interlocutory order of the District Court of the Northern Mariana Islands.

Permits any U.S. attorney appointed for the Northern Mariana Islands to serve at the same time as U.S. attorney in another judicial district.

Allows individuals from the Northern Mariana Islands to serve as magistrates.