In the exercise of the power vested in the President by, the Constitution, and by virtue of the seventeen hundred and fifty-third section of the Revised Statutes and of the civil-service act approved January 16, 1883, the following rules for the regulation and improvement of the executive civil service are hereby promulgated: RULE I. No person in said service shall use his official authority or influence either to coerce the political action of any person or body or to interfere with any election. RULE II. No person in the public service shall for that reason be under any obligations to contribute to any political fund or to render any political service, and he will not be removed or otherwise prejudiced for refusing to do so. RULE III. It shall be the duty of collectors, postmasters, assistant treasurers, naval officers, surveyors, appraisers, and custodians of public buildings at places where examinations are to be held to allow and arrange for the reasonable use of suitable rooms in the public buildings in their charge, and for heating, lighting, and furnishing the same for the purposes of such examinations; and all other executive officers shall in all legal and proper ways facilitate such examinations and the execution of these rules. RULE IV. 1. All officials connected with any office where or for which any examination is to take place will give the Civil Service Commission and the chief examiner such information as may be reasonably required to enable the Commission to select competent and trustworthy examiners; and the examinations by those selected as examiners, and the work incident thereto, will be regarded as a part of the public business to be performed at such office. 2. It shall be the duty of every executive officer promptly to inform the Commission, in writing, of the removal or discharge from the public service of any examiner in his office or of the inability or refusal of any such examiner to act in that capacity. RULE V. There shall be three branches of the service classified under the civil-service act (not including laborers or workmen or officers required to be confirmed by the Senate), as follows: 1. Those classified in the Departments at Washington shall be designated "The classified departmental service." 2. Those classified under any collector, naval officer, surveyor, or appraiser in any customs district shall be designated "The classified customs service." 3. Those classified under any postmaster at any post-office, including that at Washington, shall be designated "The classified postal service." 4. The classified customs service shall embrace the several customs districts where the officials are as many as fifty, now the following: New York City, N.Y.; Boston, Mass.; Philadelphia, Pa.; San Francisco, Cal.; Baltimore, Md.; New Orleans, La.; Chicago, Ill.; Burlington, Vt.; Portland, Me.; Detroit, Mich.; Port Huron, Mich.