As the Trump administration tries to aggressively increase its number of immigration arrests, “sanctuary cities” are a top target.

Many leaders say their policies to limit local cooperation with federal immigration officials stand. But signs of division have emerged.

Have you wondered if Rochester identifies as a sanctuary city? Do you even know what a sanctuary city is? The short answer is yes, Rochester is a sanctuary city. Here's what that means.

The Trump administration will have to contend with 13 sanctuary states and 220 sanctuary cities and counties that are refusing to fully comply with federal immigration enforcement, according to a report published by the Center for Immigration Studies earlier this month.

Four sanctuary cities are under federal investigation for their immigration policies, including Denver, Chicago, New York City and Boston.