President Donald Trump’s promised crackdown on illegal immigration has begun to take shape in San Diego County, as federal agents launched targeted operations to arrest undocumented immigrants and a wave of military troops got to work reinforcing U.

Immigrant rights groups are urging anyone who feels unsafe to know their rights in case they are stopped by a federal enforcement official.

Agents from U.S. Immigrations and Customs Enforcement, the FBI and the Drug Enforcement Administration have taken part in immigration raids across San Diego as President Donald Trump’s promised deportation crackdown

U.S. Immigration and Customs Enforcement (ICE) appear to be stepping up operations in San Diego County, as migrant communities remain on edge over President Donald Trump's pledge to carry out mass deportations.

At the heart of the discussion was to what extent city police are legally able to assist immigration officials under Senate Bill 54, a California law that restricts the role local law enforcement can play in immigration enforcement but also has allowances for working with federal officers to address violent criminals.

One by one, an ICE attorney asked Partida to move the detainees’ cases to courts closer to their new locations. All of the people who were transferred had attorneys in San Diego, including some through a county program that represents people in local immigration custody for free.

Border czar Tom Homan told NBC News that several people with criminal convictions were apprehended in Chicago.

Federal agencies working in California pledged cooperation in immigration enforcement operations and posted photos of people being taken into custody.

The Trump administration has rescinded a more than decade-old policy limiting immigration enforcement at schools.

The Department of Justice says a top Trump administration official is in Chicago this weekend to “personally observe” immigration enforcement actions by multiple agencies.

Immigration and Customs Enforcement agents appear to have stepped up their detention of unauthorized immigrants, taking more than 500 people into custody on Thursday, almost twice the average number of daily arrests late last year.

A nationwide immigration enforcement blitz launched by the Trump administration over the weekend has sparked fear and uncertainty in Santa Barbara, where Immigration and Customs Enforcement (ICE) agents were spotted conducting operations.