US Code
Part B— Administration
§ 4558. Withholding of charitable contributions; definitions

(1) the term “charitable organizations” means national voluntary health and welfare agencies designated by the Director of the Office of Personnel Management pursuant to Executive Order 10927, dated March 19, 1961; and
(2) the term “employee” means any employee of the House of Representatives whose compensation is disbursed by the Chief Administrative Officer of the House of Representatives.