The Civil Rights Act of 1964, a federal statute, forbids discrimination on the basis of national origin in employment. The Equal Employment Opportunity Commission (EEOC) is the administrative agency that oversees the law. The EEOC issued Guidelines on Discrimination because of National Origin. According to one of the guidelines, the EEOC will presume a violation of the law if an employer sets a work requirement that employees must speak only English in the workplace. This is an interpretive rule because it interprets the Civil Rights Act.