Although its proponents claimed that "ketuanan Melayu" was directly derived from Article 153 of the Constitution, the Reid Commission which drafted the framework for the Constitution had stated that the provisions for Malay privileges were to be temporary in nature, and eventually abolished, citing the only reason for their existence as tradition and economic necessity as a form of affirmative action for the Malays. Despite this, those who challenge "ketuanan Melayu" or "Malay rights" were still often berated, especially by politicians from UMNO. Many UMNO politicians continued referring to non-Malays as "orang pendatang" or "pendatang asing" (foreign immigrants).