 He was the lead line attorney on the "United States v. City of Seattle" (Seattle PD) consent decree matter from its inception in 2010 until the SPD was found in full and effective compliance in 2018.Among the honors Diaz received while at the DOJ was the EOUSA Director's Award for “extraordinary professional achievements and excellence” in 2014, among the highest awards given to the nationwide United States Attorney community.In 2012 he received the Thomas C. Wales Performance Award, the highest award given at the Seattle U.S. Attorney's Office, and the Assistant Attorney General for Civil Rights Division's Distinguished Service Award, also among the highest awards in that division.