Complex sentence: He has also said that he is not white supremacist, citing the fact that his four children are Hispanic, which is irrelevant and does nothing to prove his alleged lack of white supremacist beliefs, since Hispanic is not a racial category and there are White Hispanics.
Split into simpler sentences: He has also said that he is not white supremacist, citing the fact that his four children are Hispanic. However, this is does nothing to prove his alleged lack of white supremacist beliefs, since Hispanic is not a racial category and there are White Hispanics.