Perez noted the U.S. Department of Justice's duty to enforce laws that bar "discrimination on the basis of race, color or national origin, " and requirements that "affirmative measures" be taken to assist students for whom English isn't their native language.

CNN: STORY HIGHLIGHTS

The proposed amendments include articles that would allow collective bargaining for public sector workers and affirmative action measures for women.

CNN: Turkey's Erdogan hails constitutional referendum win