Top Trump administration officials reportedly ignored the advice of senior American diplomats not to end the Temporary Protected Status (TPS) of hundreds of thousands of Central Americans and Haitians living in the U.S.

The warnings, transmitted in a series of diplomatic cables to top State Department officials last year, conveyed that ending the immigrants' temporary residency and deporting them could destabilize the region, The Washington Post reported Tuesday.

Senate Democrats are investigating the cables, and recently referred their findings to the Government Accountability Office (GAO), the Post reported.

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Despite the warnings from senior diplomats, then-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 joined other top Trump administration officials in pressing the Department of Homeland Security (DHS) to end the immigrants' protected status.

In an Oct. 31 letter to then-acting Homeland Security Secretary Elaine Duke Elaine Costanzo DukeAppeals court sides with Trump over drawdown of immigrant protections Trump mulled selling Puerto Rico, former aide says Chad Wolf becomes acting DHS secretary MORE, Tillerson argued that conditions in Central America and Haiti had improved to the point that the TPS protections were no longer necessary.

But Duke was reluctant to end the protections and after consulting with a top aide decided that she was not comfortable with ending the immigrants' TPS, the Post reported.

That prompted a frustrated phone call to Duke by White House chief of staff John Kelly John Francis KellyMORE, who had himself served atop DHS for the first six months of the Trump administration.

According to the Post, the Trump administration has so far canceled TPS for 195,000 Salvadorans, 46,000 Haitians and, most recently, 57,000 Hondurans. Some 273,000 U.S.-born children have parents from those countries covered under TPS.

Sen. Bob Menendez Robert (Bob) MenendezKasie Hunt to host lead-in show for MSNBC's 'Morning Joe' Senators ask for removal of tariffs on EU food, wine, spirits: report VOA visa decision could hobble Venezuela coverage MORE (N.J.), the top Democrat on the Senate Foreign Relations Committee, sent a letter to the GAO requesting an independent investigation into the administration officials' actions, in which he said that Tillerson had deliberately disregarded the advice of career State Department officials.

"I am concerned that the Department of State, under then-Secretary of State Tillerson’s leadership, acted in a way that jeopardized U.S. national security and put at risk the physical safety of current beneficiaries of the Temporary Protected Status program," Menendez wrote, according to the Post.