Madison Sheehan, deputy director of U.S. Immigration and Customs Enforcement, said at a Department of Homeland Security briefing that ICE and DHS will expand use of Section 287(g) agreements to deputize state and local law enforcement to arrest, transport and detain noncitizens they allege to be criminals, and announced REAL ID enforcement and a CBP app intended to facilitate voluntary returns.

Sheehan said the announcements are part of a broader enforcement push. "We have deputized state and local law enforcement to cooperate in performing arrest, transportation, and the detention of these heinous criminals that are roaming free in our communities," she said, and described the use of 287(g) agreements as "a force multiplier in order to complete the president's mission of keeping America safe." She also said REAL ID enforcement began May 7 and that 81% of Americans are already REAL ID compliant.

Sheehan referenced a campaign called Operation Title Wave and cited cooperation with state officials. She said Governor Kristi Noem called on Illinois Gov. J.B. Pritzker to end what Sheehan described as "disastrous sanctuary city policies," and said she and Florida Gov. Ron DeSantis spoke at a press conference about Operation Title Wave.

On technology and return assistance, Sheehan said U.S. Customs and Border Protection's new "CBP home" app will offer "illegal aliens to travel with assistance and a stipend back to their home country through a self deport mechanism." She added: "There remains no reasonable excuse for aliens to stay in our country. By using the CBP home app, illegal aliens now have a safe way to depart on day 1 and then potentially come back to pursue the American dream." These are Sheehan's characterizations of the program and its aims.

The briefing did not specify which state or local jurisdictions had newly signed 287(g) agreements, how many additional officers would be deputized, or the funding sources and eligibility criteria for stipends mentioned in connection with the CBP app. Sheehan did not provide timelines or documentation showing changes in individual jurisdictions' legal agreements.

The announcements change DHS's stated enforcement posture by emphasizing expanded cooperation with state and local law enforcement and new administrative tools; officials did not present formal rulemaking or legislation during the briefing.