evidence: The Congress finds that, through the use of various practices and procedures, citizens of language minorities have been effectively excluded from participation in the electoral process. Among other factors, the denial of the right to vote of such minority group citizens is ordinarily directly related to the unequal educational opportunities afforded them resulting in high illiteracy and low voting participation. The Congress declares that, in order to enforce the guarantees of the fourteenth and fifteenth amendments to the United States Constitution, it is necessary to eliminate such discrimination by prohibiting these practices, and by prescribing other remedial devices. [...] Congress hereby directs the Director of the Census forthwith to conduct a survey to compile registration and voting statistics: (i) in every State or political subdivision with respect to which the prohibitions of section 10303(a) of this title are in effect, for every statewide general election for Members of the United States House of Representatives after January 1, 1974; and (ii) in every State or political subdivision for any election designated by the United States Commission on Civil Rights. Such surveys shall only include a count of citizens of voting age, race or color, and national origin, and a determination of the extent to which such persons are registered to vote and have voted in the elections surveyed.