Gov. Scott Walker signed a controversial bill that will ban Wisconsin’s local governments from issuing photo IDs to residents into law Monday.

The law will specifically regulate local governments’ production and use of photo IDs. Walker said in a statement that it will “protect taxpayers and the integrity of elections.” He said in a tweet that people could access free state-issued IDs from Wisconsin’s Department of Motor Vehicles.

Government-issued ID should be uniform across state. State-issued photo ID cards are available for free upon request at DMV.

— Governor Walker (@GovWalker) April 25, 2016

University of Wisconsin political science professor Barry Burden said the law will not have any impact on local governments because they were not issuing IDs like these before anyway. Only Milwaukee and a few other cities in the state looked to implement such IDs for their residents.

“[The law] has no impact in the sense that it prevents them from doing something that they weren’t already doing,” Burden said. 

Burden said these IDs could be useful for some people who do not have any kind of ID, but need it to open a bank account or obtain pharmacy prescriptions. But there are alternatives for such people, so local IDs may not be necessary.

Rep. JoCasta Zamarripa, D-Milwaukee, said in a statement that the law is “a step backward” for Wisconsin. She said it will marginalize undocumented immigrants who cannot obtain government IDs and make issuing IDs impossible for local governments that want to do so.

“At best, this law is aimed at keeping immigrants to this country in the shadows by barring individuals from using local IDs for daily life activities such as having access to services such as recycling centers, homeless shelters and health care facilities, among others,” Zamarripa said. “At worst, it seems to be part of a coordinated effort to make this country as unwelcoming to immigrants as possible.”

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Thousands of immigrant workers protested against this legislation in Madison in February. Burden said there might be backlash against this law in the future from its opponents and immigrant rights advocates.

Burden said this law should not be confused with the voter ID law. IDs issued through local governments would not be considered valid voter ID.