

TEXAS BAND OF YAQUI INDIANS Tribal Court


As a Chief Judge, the Honorable Mia Perez-Arroyo, is responsible for developing and implementing TBYI Judicial branch according to the framework provided in the TBYI Constitution and Bylaws. Judge Perez Arroyo has over 20 years of experience as a trial attorney and currently serves as an expert in the field of Tribal Law.
Judge Perez Arroyo earned a Juris Doctorate from the UCLA School of law in 1999. She graduated from UC Berkeley in 1994 with two bachelor of Arts degrees: Ethnic Studies and Dramatic Art. She served as a Western Regional Representative for the American Indian Law Students Association, and as a Vice President of her law school’s chapter.
Before starting her own law practice in 2019, Judge Perez Arroyo was a Deputy Attorney General at the California Department of Justice. She served as a Lead Prosecutor under Vice President Kamala Harris while she was the Attorney General of the State of California.
“Under the General Supervision of the Chairman and the Tribal Council, I am Responsible for the overall administration and operation of the Tribal Court System including but not limited to: Civil, Criminal, Traffic and Juvenile Cases/Reviews; Civil Hearings; Arraignments, Joint and Separate Trials, Dismissal, Other Preliminary Matters; Maintenance of an ongoing referral system for offenders including completion or default of Court ordered treatment. Ensure financial accountability regarding collection of all court fines/fees and the Tribal Court budget. Supervise court staff. In addition, I represent the Tribe in all State, Federal, and International legal matters.”
In May of 2021, pursuant to the authority granted by the Texas Band of Yaqui Indians General Council, Mia Perez-Arroyo was duly elected and confirmed to serve as Tribal Judge and Tribal Attorney for the Texas Band of Yaqui Indians. This appointment was made in accordance with the procedures and customs established by the Tribal Constitution and the governing body of the Nation, thereby vesting Ms. Perez-Arroyo with all judicial and legal responsibilities and authorities inherent to these offices.
Honorable Mia Perez-Arroyo
TEXAS BAND OF YAQUI INDIANS
Family and Child Services


Ms. Sylvia Rios serves as Child and Family Service Advocate for the Texas Band of Yaqui Indians. In her role, she works directly with the Tribal Court if neccesary, to coordinate the placement of Yaqui children in family homes or care agencies, ensuring the well-being and safety of each child. Ms. Rios collaborates with state and local child case workers to secure appropriate placements for tribal children, recognizing that each case requires unique attention and support.
With over 30 years of experience in the behavioral health field, Ms. Rios offers compassionate guidance and identifies resources addressing mental health and overall wellness. Her dedication extends to providing support for a broad range of family concerns, ensuring that our children and families have access to essential services.
Ms. Rios is also a proud member and founding leader of the TBYI Sage Clan Women’s Society, where she continues her commitment to advocacy, cultural preservation, and community support.
