Kirstjen Nielsen, the future ex-secretary of National Security of the Government of the US President, Donald Trump, has been the executor of harsh immigration policies, including the separation of immigrant families with minors, something that was not enough to convince the president of his worth.
The head of the internal security and immigration portfolio left Trump's cabinet on Sunday after the latter had publicly and privately claimed greater harshness in immigration matters, although his work has been criticized by human rights defenders in the country. .
Nielsen has been responsible for launching an aggressive migration policy championed by Trump that has included the separation of immigrant families with minors when they crossed the border with Mexico irregularly for months, a migration veto against Muslim-majority countries and regulations to limit the asylum on the border with Mexico.
Undoubtedly, one of the greatest shadows that will remain in Nielsen's legacy will be the desperate cries and laments that were recorded to immigrant children separated from their parents when they were detained in cells.
However, the performance of these tasks has not satisfied Trump's demands for greater rigidity in migration issues, which has generated multiple internal disagreements between both that have been picked up by local media.
The outgoing secretary was nominated to head the Department of Homeland Security (DHS) in October 2017 to become the third person to do so under the baton of Trump, following the passage of General John Kelly and interim secretary Elaine Duke.
Precisely, until that moment, Nielsen had been Kelly's chief of staff until he became the president's chief of staff.
The general had been until his departure in mid-December Nielsen's main advocate in the White House.
Nielsen, an expert in cybersecurity and disaster management who was part of the national security council during the George W. Bush administration (2001-2009), started working with Kelly at the end of 2016, when she was in charge of preparing the general, nominated then as head of DHS, for his confirmation hearings in the Senate.
Kelly was then impressed by the dedication of Nielsen, who after catching a severe flu coughed so badly that he broke a rib, and instead of taking a cut, he bandaged his torso and continued working at the same pace, according to the magazine Politico.
Within the Bush administration, which he entered in 2004, Nielsen worked in the Transportation and Security Administration (TSA), which reports to DHS.
Graduated in law from the University of Virginia and in foreign service from Georgetown University, Nielsen created her own risk management consultancy last decade and worked at a center for national and cyber security studies; It was linked to this between 2012 and 2016.
It was her close relationship with Kelly that elevated Nielsen to the White House, where she became deputy chief of staff and applied a marked rigidity.
Nielsen's lack of tolerance for the internal struggles of presidential advisers was reflected in his habit of canceling meetings with senior White House officials if someone was late for meetings and in his meticulous control of Kelly's agenda.
The military discipline involved winning among some the nickname of "nurse Ratched", the authoritarian character of the novel and movie "One Flew Over the Cuckoo's Nest", while, according to the newspaper The New York Times, others refer to it like Joseph Ratzinger, the cardinal who would become Pope Benedict XVI.