to carry out a Civilian Conservation Corps under this Act for a fiscal year will be insufficient to employ all of the citizens of the United States described in section 2(a) who are seeking or likely to seek employment in the Civilian Conservation Corps and continue the employment of current employees who desire to remain in the Civilian Conservation Corps, the President shall employ additional persons in the Civilian Conservation Corps in the following order of preference: (1) Unemployed veterans of the Armed Forces and unemployed members of the reserve components of the Armed Forces. (2) Unemployed citizens who have exhausted their entitlement to unemployment compensation. (3) Unemployed citizens, who immediately before employment in the Civilian Conservation Corps, are eligible for unemployment compensation payable under any State law or Federal unemployment compensation law, including any additional compensation or extended compensation under such laws. (4) Other citizens described in section 2(a). (b) Housing and care of employees The President may provide housing for persons employed in the Civilian Conservation Corps and furnish them with such subsistence, clothing, medical attendance and hospitalization, and cash allowance, as may be necessary, during the period they are so employed. (c) Transportation The President may provide for the transportation of persons employed in the Civilian Conservation Corps to and from the places of employment. (d) Non-Discrimination In employing citizens for the Civilian Conservation Corps, no discrimination shall occur in accordance with Federal employment law