WASHINGTON (Reuters) – President Donald Trump’s administration will leave protections in place for immigrants who entered the country illegally as children, known as “dreamers,” but will consider all other illegal immigrants subject to deportation, according to guidance released on Tuesday.

The Department of Homeland Security guidance is the implementation plan for executive orders on border security and immigration enforcement that Trump signed on Jan. 25, days after taking office.

The Republican president campaigned on a pledge to get tougher on the estimated 11 million illegal immigrants in the United States, playing on fears of violent crime while promising to build a wall on the border with Mexico and to stop potential terrorists from entering the country.

DHS officials, who spoke on the condition of anonymity on a conference call with reporters, said that although any immigrant in the country illegally could be deported, the agency will prioritize those deemed as posing a threat.

These include recent entrants, those convicted of a crime, and people charged but not yet convicted.

However, many of the instructions to immigration agents outlined in the guidance will not be implemented immediately because they depend on Congress, a public comment period or negotiations with other nations, the officials said.

For example, the DHS will need to publish a notice in the Federal Register subject to review in order to implement one part of the plan that calls on U.S. Immigration and Customs Enforcement (ICE) agents to increase the number of immigrants who are not given a hearing before being deported.

The new guidance would subject immigrants who cannot show they have been in the country for more than two years to “expedited removal.” Currently, only migrants apprehended near the border who cannot show they have been in the country more than 14 days are subject to rapid removal.

The memos also instructs ICE to detain migrants who are awaiting a court decision on whether they will be deported or granted relief, such as asylum. DHS officials said they are reviewing what jurisdictions may have laws in place that prevent the amount of time immigrants can be held.

The agency also plans to send non-Mexican migrants crossing the southern U.S. border back into Mexico as they await a decision on their case. The DHS officials said this plan would be dependent on partnerships with the Mexican government and would not be implemented overnight.

Trump’s planned measures against illegal immigrants have drawn protests, such as an event last week that activists called “A Day Without Immigrants” to highlight the importance of the foreign-born, who account for 13 percent of the U.S. population, or more than 40 million naturalized American citizens.

(Reporting by Julia Edwards Ainsley; Editing by Chizu Nomiyama and Frances Kerry)

IMAGE: A young boy holds U.S. flags as immigrants and community leaders rally in front of the U.S. Supreme Court to mark the one-year anniversary of President Barack Obama’s executive orders on immigration in Washington, November 20, 2015.REUTERS/Kevin Lamarque