Theodore Holmes.
"The Rainbow Nation", also known as the Holmes Report, was a report written by Mexican historian Theodore Holmes in 1917 as the head of a subcommittee considering the problem of Negro slavery in Mexico. Sobel quotes a 650 word excerpt in which Holmes discusses relations between the various races of the U.S.M., noting that Anglos and Hispanos have mostly merged into a single group, and that Mexicanos are rapidly joining them, while the Indians remain aloof from the rest of Mexican society. The Negroes, however, are despised by the dominant races, and Holmes sees no prospect of their being permitted an equal place in Mexican society. That being the case, Holmes suggests that Mexico's Negro slaves be freed, and then encouraged to emigrate to their own separate part of Mexico or resettled in the Confederation of North America.
Sobel notes that "The Rainbow Nation" was widely quoted after its publication, and became the basic document for future studies of Mexican race relations. The use of "rainbow nation" to refer to the U.S.M. had become so commonplace by the 1940s that when Philip Harrison of the Black Justice Party launched his terror campaign against Mexican society in 1944 he referred to it as his "war against the rainbows" and it became popularly known as the Rainbow War.
Holmes was criticized for his reliance on North American history as a model, since few Mexicans were prepared to admit their their nation resembled the C.N.A. Holmes had not suggested what part of Mexico might be set aside for future freed slaves, and President Victoriano Consalus, who had created the committee Holmes took part in, rejected the idea of allowing the Negroes to move to the C.N.A., saying "One day they may return to haunt us."
In 1925 Holmes published a collection of the papers produced by the committee established by Consalus called The Rainbow Nation and Other Papers.