Marc Rosenblum resigns from DHS citing 'war on immigrants' and corruption

Marc Rosenblum, the top data official at the Department of Homeland Security, has resigned, citing the Trump administration's "war on immigrants" and "brazen corruption." His departure highlights a halt in public data reporting on immigration since February 2025. Rosenblum, a 10-year veteran of the agency, had previously warned in 2015 that mass deportations could cost the U.S. $1.6 trillion in GDP. DHS dismissed his criticisms as opinion.

Rosenblum resignation

• ▪Rosenblum previously served on President Barack Obama’s Immigration Policy Transition Team in 2009
• ▪Marc Rosenblum, the executive director of the Office of Homeland Security Statistics, announced his resignation on LinkedIn during the weekend of July 26-27, 2026
• ▪Rosenblum served at the Department of Homeland Security for over 10 years, under the first Trump administration, the Biden administration, and the second Trump administration
• ▪In his resignation post, Rosenblum said he was "thrilled to end my relationship with the current administration."
• ▪The Data Foundation recently recognized Rosenblum with an award for transforming data into strategic policies

DHS data transparency issues

• ▪As a deputy assistant secretary, Rosenblum's role was to consolidate and publish data from DHS's 22 siloed component agencies
• ▪The un-updated data includes statistics on ICE detentions, Border Patrol encounters, and DHS repatriations
• ▪In his resignation post, Rosenblum described his team's work environment as "challenging and often hostile."
• ▪The Department of Homeland Security's website for key immigration statistics has not been updated since February 11, 2025

Trump administration criticism

• ▪Luis Miranda, a former DHS spokesman, stated the Trump administration governs by "silencing or ignoring facts and information" that conflict with its rhetoric
• ▪Rosenblum cited the Trump administration's "war on immigrants," "war on feds," "war on facts," and "brazen corruption" as reasons for his resignation
• ▪A DHS spokesperson responded to Rosenblum's criticism by stating, "People are always welcome to their opinion—that doesn't make it right or factual."

Mass deportation warnings

• ▪In 2015 written testimony to a Senate committee, Rosenblum warned that a mass deportation policy could harm the U.S. economy and established communities
• ▪The 2015 testimony also stated that "a robust enforcement system inevitably inflicts damage on established families and communities."
• ▪Rosenblum's 2015 testimony estimated that deporting all 11 million unauthorized immigrants would reduce U.S. real GDP by $1.6 trillion (5.7%)

DHS official departures

• ▪Other officials who have departed DHS include acting ICE director Todd Lyons and former DHS chief Kristi Noem
• ▪Rosenblum is one of several DHS officials to leave since Trump's second inauguration, but he is one of the few to be openly critical