Mexico’s lead negotiator with the Trump administration is slamming new rules that call for deporting people living illegally in the U.S. to Mexico, regardless of whether they are citizens of that country.

“I want to say clearly and emphatically that the government of Mexico and the Mexican people do not have to accept provisions that one government unilaterally wants to impose on the other,” Mexican Foreign Minister Luis Videgaray said Wednesday, according to Reuters.

“We will not accept it, because there’s no reason why we should, and because it is not in the interests of Mexico,” he told reporters at Mexico’s foreign ministry in Mexico City.

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Videgaray added the “unilateral” rules would likely dominate talks between the U.S. and Mexico Wednesday and Thursday.

Secretary of State Rex Tillerson Rex Wayne TillersonGary Cohn: 'I haven't made up my mind' on vote for president in November Kushner says 'Alice in Wonderland' describes Trump presidency: Woodward book Conspicuous by their absence from the Republican Convention MORE and Homeland Security Secretary John Kelly John Francis KellyMORE are due to arrive in Mexico Wednesday afternoon for talks between both nations on immigration and security.

Roberto Campa, who heads the human rights division of Mexico’s interior ministry, added Videgaray was referencing the “hostile” and “unacceptable” plan to deport non-Mexicans to Mexico if they cross the southern border.

The Department of Homeland Security (DHS) on Tuesday released details on how it will prosecute criminal and undocumented immigrants under President Trump Donald John TrumpHR McMaster says president's policy to withdraw troops from Afghanistan is 'unwise' Cast of 'Parks and Rec' reunite for virtual town hall to address Wisconsin voters Biden says Trump should step down over coronavirus response MORE.

The two memos from Kelly expand immigration raids and the definition of criminal aliens, while diminishing sanctuary areas and enlisting local law enforcement to execute federal immigration policy.

The memos appear designed to set the stage for an aggressive crackdown on illegal immigration, with law enforcement officials granted new powers to carry out deportations.

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DHS officials confirmed Tuesday they are working on a plan to send undocumented immigrants who crossed the U.S.-Mexico border back to Mexico, even if they are not Mexican citizens.

“This would say if you want to make a claim for asylum or whatever we’ll hear your case but you are going to wait in Mexico,” a DHS official said, according to ProPublica.

White House press secretary Sean Spicer on Tuesday said Kelly and Tillerson would “talk through the implementation” of the new immigration rules.

“No,” he said when asked if the Cabinet officials were visiting Mexico to smooth over tensions with its government. "I think the relationship with Mexico is phenomenal right now and I think there’s an unbelievable and robust dialogue between the two nations."

“I feel very confident that any country who has a citizen who comes into this country and that we send back, will make sure that they comply with this."