Donald Trump's sweeping deportation plan targets millions in the United States

Overstaying a visa is a civil offence and those immigrants who do overstay are not included in the priority list specifically, however, in Trump's memos, the offenders are more likely to face deportations than they did earlier.

But the officials also made clear that the department intends to aggressively follow Trump's promise that immigration laws be enforced to the maximum extent possible, marking a significant departure from the procedures in place under former President Barack Obama.

NPR reports that the policies call for an expansion of the federal program that enlists the help of state and local police to help enforce immigration laws, but that partnership has come under fire by critics who allege that it has led to racial profiling.

During Tuesday's White House press briefing, Press Secretary Sean Spicer stated that the DHS memo "outlines the steps that DHS will take to secure the nation's southern border, prevent further illegal immigration, and to repatriate illegal immigrants swiftly, consistently, and humanely". Otherwise, they could be subject to expedited removal with no court proceeding.

The memos did not specify how the Trump administration plans to deal with 750,000 so-called Dreamers, migrants brought to the country illegally as children and granted work permits, a key Obama administration program.

In his memos, Kelly is seeking to strengthen the government's hand by authorizing various agencies to implement unused parts of existing law which immigration activists fear could usher in new and onerous ways to process undocumented immigrants in the US.

The memos undo Obama administration guidelines that told DHS and Immigration & Customs Enforcement agents to prioritize the deportation of those who'd committed serious crimes or are national security threats, as well as those who recently entered the country.

He described the wall as necessary to deter illegal immigration and called it a "critical component" of Mr Trump's overall border security strategy.

Earlier this month, ICE stepped up its operations against illegal immigrants in a series of raids across several U.S. states, including the traditional "safe havens" around New York City and Los Angeles where immigration control has historically turned a blind eye to law-abiding undocumented migrants.

However, if approved, the new regulations would sanction the same procedure for those who have been in the country for up to two years. They also direct the government to begin planning, designing and constructing a wall along the US border with Mexico.

And the memos also call for hiring 5,000 more Border Patrol agents, 10,000 more Immigration and Customs Enforcement (ICE) agents and 500 more officers for the Air and Marine operations at Customs and Border Protection (CBP). Customs and Border Protection also can deputize officers, with a focus on the four border states: California, Arizona, New Mexico and Texas.

Mr Trump said at a news conference that DACA is "a very hard subject" for him, but said that those brought into the country illegally as children - known as "dreamers" would be treated "with heart".



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