Immigration and Customs Enforcement officials are planning a major enforcement operation that will target immigrants for several days following the inauguration of Donald Trump as president, according to a document reviewed by NBC News and a person familiar with the planning.

Donald Trump's incoming U.S. presidential administration plans to intensify immigration enforcement nationwide soon after he takes office on Monday, a person with knowledge of the plans said. "We’re going to be doing operations all across the country,

Many immigrant advocacy groups in the city and suburbs have been reaching out to undocumented immigrants ahead of Trump's inauguration, in an effort to get ready for what might be coming.