Alejandro Celorio Alcántara has been a member of the Mexican Foreign Service since 2006, currently holding the rank of Counselor. He serves as the Foreign Ministry's Legal Advisor, having previously served as Deputy Legal Adviser "A". In the Mexican embassy in the United States, he was head of the Hispanic and Migration Affairs Section, where he worked to defend the interests of Mexicans in the U.S., especially undocumented Mexicans. He has experience in strategic litigation and in working with pro-migrant and civil rights organizations in the U.S.

He has also been posted to the Mexican consulate in Sacramento, California as consul for protection and to the embassy in Paraguay, where he was in charge of political and economic affairs.

He is a graduate of the LaSalle University Law School and has a Master's degree in Legal Sociology from the Oñati International Institute for the Sociology of Law in Spain, and a Master's degree in International Transactions and Comparative Law from the University of San Francisco Law School and in U.S. Law from the University of Houston Law Center. He also has a Certificate in Public Administration from the Universidad Iberoamericana.