Venue has emerged as a key issue in the legal battle over relocating asylum-seeking migrants from New York City to all corners of the Empire State, in a case set to resume in Manhattan on Tuesday.

The city’s law department filed suit in New York County Supreme Court against 30 counties and a town seeking to set aside what it says were their “unlawful” executive orders preventing New York City—which is self-identified as a “sanctuary city”—from using, at its own expense, commercial hotels to provide migrants with temporary housing.