Wu, who has said she will not take a formal maternity leave, gave birth to her daughter just over two weeks ago.

Boston Mayor Michelle Wu says her administration feels “very strongly that we’re on solid legal ground” in being a sanctuary city and is still reviewing a letter it received from Congress on getting called to testify on such policies.

Republican Rep. James Comer of Kentucky has asked Wu to appear before a House committee next month, as it investigates 'sanctuary' communities and whether they are preventing federal immigration agents from removing dangerous criminals.