The enforcement of the order by US President Donald Trump that illegal immigrants be fished out started over the weekend across the country.
Carolina, Atlanta and Chicago, immigration officials confirmed the development, with more than a third of those detained in the Los Angeles area being deported to Mexico.
“Anyone who has entered the United States illegally is subject to deportation – that is what it means to have laws and to have a country,” Mr Trump said in Phoenix, Arizona, last August.
Newsmen recalls that Trump pledged to deport three million illegal immigrants, including those with minor convictions and those known to have committed serious crimes.
Gillian Christensen, a spokeswoman for the Department of Homeland Security, which oversees Immigration and Customs Enforcement (ICE), said the raids were part of “routine” immigration enforcement actions.
Ms Christensen said officers found undocumented migrants from a dozen Latin American countries and some of those detained had convictions for murder and domestic violence.
“We’re talking about people who are threats to public safety or a threat to the integrity of the immigration system.”
But immigration activists claimed the raids extended to Florida, Kansas, Texas and Virginia and that otherwise law-abiding undocumented immigrants were also targeted.
Meanwhile, rights groups have protests planned in response to the raids in New York and Los Angeles as officials sweep through other states.