This comes after Boston Mayor Michelle Wu told the Justice Department she would stand by Boston's Trust Act, which prevents local officials from detaining someone for immigration.

The Trump administration has ratcheted up pressure on so-called sanctuary communities as it seeks to make good on the president's promise to remove millions of people in the country illegally.

A U.S. federal judge on Friday blocked Donald Trump's administration from withholding federal funding from more than 30 so-called sanctuary jurisdictions including Los Angeles, Baltimore, Boston and Chicago that have declined to cooperate with the Republican president's hardline immigration crackdown.