President Donald Trump's crackdown on immigration has put a renewed focus on "sanctuary" cities. Here's what that means.

The U.S. Justice Department said on Thursday it was probing the release by an upstate New York sheriff's office of an immigrant living in the U.S. illegally, in what appears to be its first use of a new policy to target state and local agencies that do not comply with President Donald Trump's directives.

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.

How will President Trump’s immigration crackdown affect New York City? FOX 5’s Stephanie Bertini takes a deep dive into the uncertain future of NYC’s sanctuary city status as Trump’s new administration moves forward with mass deportation policies and tougher immigration enforcement.

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