(d)
Any judge who elects to become a senior judge under subsection (c) of this section and who thereafter—
(1)
accepts civil office or employment under the Government of the United States (other than the performance of judicial duties pursuant to recall under subsection (c) of this section);
(2)
engages in the practice of law; or
(3)
materially violates the code of judicial conduct for United States judges,
shall cease to be a senior judge and to be eligible for recall pursuant to subsection (c) of this section.