President Trump’s top immigration officer pledged a surge of federal agents to Boston on Wednesday after the city said it would defy pressure to change its immigration policies to match the federal government’s.

At a rally Tuesday outside City Hall, Boston Mayor Michelle Wu said the city would not help U.S. Immigration and Customs Enforcement agents locate, detain and deport immigrants.

Acting ICE Director Todd Lyons fired back Wednesday, saying Boston “will see a larger ICE presence.”

Wu and other officials have long maintained that their approach to immigration law keeps the city safer.

The city’s policy, set by a local law known as the Trust Act , allows Boston Police Department officers to work with ICE on criminal investigations, but limits their ability to cooperate on or share

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