What is Judge Marni Guerrero's background?
EOIR's notice says that Marni Guerrero was appointed in October 2018. Judge Guerrero earned a Bachelor of Science in 1999 from Arizona State University, a Juris Doctor in 2003 from the Arizona State University Sandra Day O’Connor College of Law, and a Master of International Affairs in 2010 from the Columbia University School of International and Public Affairs. From 2017 to 2018, she was an assistant chief counsel with Immigration and Customs Enforcement, Department of Homeland Security. From 2013 to 2017, she was in private practice. From 2010 to 2013, she served as an assistant U.S. attorney at the U.S. Attorney’s Office for the District of Arizona. From 2003 to 2008, she was an attorney with Roush, McCracken, Guerrero, Miller & Ortega in Arizona.
What does TRAC report about Judge Marni Guerrero's asylum decisions?
TRAC, a research center that began at Syracuse University, reports that for FY 2021 - 2026 (data covers the first 9 months of fiscal year 2026), Judge Marni Guerrero decided 550 asylum cases at Phoenix Immigration Court and denied 95.1 percent, based on its report of Aug 27, 2026. These are past figures for one court. They do not predict your case, which turns on your facts, evidence, nationality and representation, and TRAC cautions against simple comparisons between judges at different courts. Read the full report at TRAC, and talk to a lawyer about your own case.
What the official record establishes
The source lists the name Marni Guerrero in 1 alphabetical row. The recorded title is Immigration Judge. The record is not an appointment history or an employment certification.
Dated court associations
EOIR’s court-specific tables associate this entry with Phoenix Immigration Court. The relationship is recorded as listed 2026-10-20; it may include supervisory coverage rather than a merits-hearing assignment.