5 USC § 7321. Political participation
It is the policy of the Congress that employees should be encouraged to exercise fully, freely, and without fear of penalty or reprisal, and to the extent not expressly prohibited by law, their right to participate or to refrain from participating in the political processes of the Nation.
(Added Pub. L. 103–94, §2(a), Oct. 6, 1993, 107 Stat. 1001.)