(CNN) Florida's ban on sanctuary cities just went into effect.

What will that mean in a state that demographers estimate is home to nearly 800,000 undocumented immigrants

That depends on who you ask.

Florida Gov. Ron DeSantis, who made passing the ban a campaign promise, argues it will make communities safer by requiring police to help ICE.

The city of South Miami and several immigrant-rights groups, who filed a lawsuit challenging the ban, say it endangers public safety by fueling fear of law enforcement in immigrant communities.

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