A new Justice Department memo is threatening criminal charges against state and local officials who don't cooperate with federal immigration agents, which has some New Yorkers fearing what could come next.

The president's sweeping changes, legal challenges notwithstanding, will deter migrants from coming to New York, experts said.

State and local leaders across the country are bracing for a tidal wave of aggressive immigration policies and possible mass deportations that President Donald Trump has vowed to enact in the hours and days following his inauguration Monday.