“ The President in establishing conditions precedent may prescribe different requirements or conditions for the veterans of different wars and their dependents and may further subdivide the classes of persons as outlined in section 1 of this title and apply different requirements or conditions to such subdivisions. ”

“ I. Veterans of the Spanish-American War, including the Boxer Rebellion and the Philippine Insurrection, and every widow, child or children, dependent father or mother of a deceased World War veteran who were in receipt of pension or compensation at the date of enactment of Public No. ”