PUBLIC LAWS-CH. 106-MAY 3, 1945 passenger-carrying vehicles, but in no event shall the price so paid for any such vehicle exceed the maximum price therefor established by the Office of Price Administration and in no event more than $1,500, which amount shall be in addition to the amount required for transportation. Maintenance, re (b) For the maintenance, operation, and repair of any Govern- ment-owned motor-propelled passenger-carrying vehicle not used !'Officdal pu" exclusively for official purposes; and "official purposes" shall not include the transportation of officers and employees between their domiciles and places of employment, except in case of medical officers on out-patient medical services and except in cases of officers and employees engaged in field work the character of whose duties makes such transportation necessary and then only as to such latter cases when the same is approved by the head of the department or estab- lishment concerned. Any officer or employee of the Government who uses or authorizes the use of any Government-owned motor- propelled passenger-carrying vehicle, or of any motor-propelled passenger-carrying vehicle leased by the Government, for other than official purposes or otherwise violates the provisions of this subsection shall be summarily removed from office by the head of the depart- ment or establishment concerned. The limitations of this subsection (b) shall not apply to any motor vehicles for official use of the Presi- dent, the heads of the executive departments, Ambassadors, Ministers, charges d'affaires, and other principal diplomatic and consular officials. Aircraft purchase, SEC. 203. Excepting appropriations for the Military and Naval lon Establishments, no appropriation for the fiscal year 1946 in this or any other Act shall be available for the purchase, maintenance, or operation of any aircraft unless specific authority for the purchase, maintenance, or operation thereof has been or is provided in such appropriation, and the acquisition of aircraft by any agency by transfer from another agency of the Government shall be considered as a purchase within the meaning hereof. Exchange allow- SEC. 204. In purchasing motor-propelled or animal-drawn vehicles or tractors, or road, agricultural, manufacturing, or laboratory equip- ment, or boats, or parts, accessories, tires, or equipment thereof, the head of any executive department or independent establishment or his duly authorized representative may exchange or sell similar items and apply the exchange allowances or proceeds of sales in such cases in whole or in part payment therefor: Provided, That any transac- tion carried out under the authority of this section shall be evidenced in writing. Minor purchases. SE. 205. Section 3709, Revised Statutes (41 U. S . C. 5), shall not apply to any purchase by or service rendered to any executive depart- ment or independent establishment during the fiscal year 1946 when the aggregate amount involved does not exceed $100, but this section shall not be construed as affecting any provision of law authorizing purchases or services without regard to said section 3709 in amounts greater than $100. Citienship require SEC. 206. Unless otherwise specified and until July 1, 1946, no part of any appropriation contained in this or any other Act shall be used to pay the compensation of any officer or employee of the Government of the United States (including any agency the majority of the stock of which is owned by the Government of the United States) whose post of duty is in continental United States unless such person (1) is a citizen of the United States, (2) is a person in the service of the United States on the date of enactment of this Act who, being eligible for citizenship, had filed a declaration of intention to become a citizen of the United States prior to such date, or (3) is a person [59 STAT.
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