According to a Sunday Politico report, while it is unclear how much direct influence Miller had over Nielsen's ouster, he has been contacting lower-level officials and threatening them to staunch the flow of immigrants across the border, or else. "I hope that the next secretary will have the support of Congress and the courts in fixing the laws which have impeded our ability to fully secure America's borders and which have contributed to discord in our nation's discourse".
This was a move Conway was quick to bash the president for, as he pointed out Trump's ineffective efforts to retain cabinet members at key departments and noted that the president reversed immediately implementing Nielsen's resignation because it was probably against the law.
And while she may not have been aggressive enough for Trump, or Miller, Nielsen will forever remembered as the person who ran DHS during one of the darkest moments in USA history. He has presided over some of the worst immigration actions and abuses of the Trump administration, while refusing to endorse the very worse of Trump's rhetoric.
He and Kirstjen Nielsen parted ways after urgent talks in the White House that followed a two-day visit to California, during which they viewed parts of the renovated border wall. But in recent weeks, as a new wave of migration has taxed resources along the border and as Trump sought to regain control of the issue for his 2020 re-election campaign, tensions flared anew.
During the meeting, Nielsen agreed with Trump's comments that there was a crisis at the border.
In her resignation letter, Ms Nielsen asked for more from help from Congress and the courts, which have opposed Mr Trump's border policies in the past.
Salah happy and proud to break Liverpool record
The performance was not at the top level but at this stage it is about fighting. "People want us to play like Manchester City ". Salah has been criticised in recent weeks for being too selfish in front of goal in desperation to end his scoreless streak.
House Speaker Nancy Pelosi added it was "deeply alarming that the Trump Administration official who put children in cages is reportedly resigning because she is not extreme enough for the White House's liking".
The number of migrants arrested at the border has risen in recent months.
Nielsen oversaw a "zero tolerance" prosecution policy that led to the separation of thousands of parents and children, and launched a policy to return asylum seekers to Mexico until their claims are heard. But she was also instrumental in ending the policy.
[W] ith almost 100,000 migrants apprehended by Border Patrol agents along the US-Mexico border in March, Trump is yet again ruminating angrily and obsessively over immigration, riffing in speeches about telling migrants "we're full" and "go back".
Under Nielsen, migrants seeking asylum are waiting in Mexico as their cases progress. "She had a background in cybersecurity".
She later served as John F. Kelly's chief of staff at Homeland Security before becoming Deputy Homeland Security Secretary in December 2017.