US Code - Chapter 15: Political activity of certain state and local employees

Section 1501 Definitions
Section 1502 Influencing elections; taking part in political campaigns; prohibitions; exceptions
Section 1503 Nonpartisan candidacies permitted
Section 1504 Investigations; notice of hearing
Section 1505 Hearings; adjudications; notice of determinations
Section 1506 Orders; withholding loans or grants; limitations
Section 1507 Subpenas and depositions
Section 1508 Judicial review

Agency chief human capital officers

Civil service functions and responsibilities