Without any fanfare, Governor Kim Reynolds signed the so-called “sanctuary cities” bill into law yesterday.

It’s unclear what may happen now. Bill backers said during debate in the House and Senate there are “some” law enforcement agencies that aren’t fully cooperating with federal immigration agents. The bill calls for withholding state funds from any city or county that fails to detain undocumented immigrants when federal authorities ask. Critics say a warrant is required for that kind of a request.

The new requirement forbidding cities and counties ordinances that provide any sort of sanctuary for undocumented immigrants arrested for a crime goes into effect January 1, 2019.