\u0022The worst is yet to come.\u0022So wrote Esquire columnist Charles P. Pierce on Monday following the ouster of Homeland Security Secretary Kirstjen Nielsen—and as signs that senior White House adviser and xenophobe Stephen Miller is exerting more control over immigration policy.As Common Dreams reported, President Trump announced Sunday that Nielsen would be leaving her position. During her time as Homeland Security secretary, she oversaw widely condemned policies including the forcible separation of families and the caging of children at the southern border.Commenting on her tenure, the ACLU tweeted Sunday: \u0022From the family separation crisis she created and defended, to restricting immigrants\u0026#039; rights to seek asylum, to relentless and pointless efforts to build Trump\u0026#039;s border wall, Nielsen\u0026#039;s department served as the key to Trump\u0026#039;s unconstitutional and anti-immigrant agenda of fear.\u0022With such a record, progressive lawmakers like Rep. Pramila Jayapal (D-Wash.) welcomed her departure.\u0022Nielsen will go down in history as presiding over an exceptionally cruel regime that separated families and violated human rights,\u0022 Jayapal said. \u0022I welcome her resignation and believe she should be held accountable for the abuses that happened under her watch.\u0022At the same time, reports that the Trump team is reportedly eyeing a successor with an even more hard-line approach to immigration triggered alarm.Kirstjen Nielsen was responsible for:-Locking toddlers in cages-The death of a 7 year-old on her agency’s watch-Repeatedly lying about taking children from their mothersNow this President wants someone even \u0022tougher.\u0022 This should be a warning to all who believe in justice.— Ilhan Omar (@IlhanMN) April 8, 2019\u0022When even the most radical voices in the administration aren\u0026#039;t radical enough for President Trump,\u0022 said Sen. Minority Leader Chuck Schumer, \u0022you know he\u0026#039;s completely lost touch with the American people.\u0022As the New York Times editorial board wrote,It\u0026#039;s no secret that Mr. Trump had a problem with Ms. Nielsen, whom he considered \u0022weak\u0022 on matters of border security. The president and Stephen Miller, his hard-line immigration adviser, have long grumbled privately about the secretary\u0026#039;s insufficiently brutal approach to the surge in migrant families across the border. Last May, stories surfaced about Mr. Trump publicly berating her in front of the entire cabinet for failing to stop the crossings.CNN also reported:A source familiar with Nielsen\u0026#039;s thinking told CNN Nielsen is taking this as a relief. Nielsen \u0022believed the situation was becoming untenable\u0022 with Trump \u0022becoming increasingly unhinged about the border crisis and making unreasonable and even impossible requests,\u0022 a senior administration official told CNN on Sunday.One such request that proved to be a point of contention, according to new reporting by NBC News, was over Trump\u0026#039;s desire to reinstate the policy of family separations. The outlet reported:According to two of the sources, Nielsen told Trump that federal court orders prohibited the Department of Homeland Security from reinstating the policy, and that he would be reversing his own executive order from June that ended family separations.That wasn\u0026#039;t the only apparent roadblock. From the Times:The president called Ms. Nielsen at home early in the mornings to demand that she take action to stop migrants from entering the country, including doing things that were clearly illegal, such as blocking all migrants from seeking asylum. She repeatedly noted the limitations imposed on her department by federal laws, court settlements, and international obligations.A likely force behind such impossible requests was Miller. In a separate story, CNN reported that Miller \u0022played key a role in Nielsen\u0026#039;s ouster,\u0022 and his \u0022heightened influence within the West Wing has been aided by the president, who recently told aides in an Oval Office meeting that Miller was in charge of all immigration and border related issues in the White House, according to a person familiar with the meeting.\u0022Given this backdrop, Pierce concluded:[I]t is something of a national crisis that even as loyal an apparatchik as Nielsen wasn\u0026#039;t cruel enough to suit this administration*, which, in a tragic misallocation of resources, cages children and not Stephen Miller. But this is the administration* she had chosen, and nothing more becomes her public service than her leaving of it. The worst is yet to come.Nielsen may be just one of the people Miller has targeted for ousting. According to Politico, the White House adviser has been \u0022telephoning mid-level officials at several federal departments and agencies to angrily demand that they do more to stem the flow of immigrants into the country, according to two people familiar with the calls,\u0022 the outlet reported.Miller was also behind withdrawal of the nomination of acting U.S. Immigration and Customs Enforcement Director Ronald Vitiello to lead ICE—a move taken so that the White House could take the agency in a \u0022tougher direction,\u0022 Politico reported.As for Nielsen\u0026#039;s job, Trump announced that Customs and Border Protection Commissioner Kevin McAleenan would serve as acting DHS secretary. With one senior DHS official saying McAleenan is \u0022not an ideologue or fire breather\u0022 on immigration and Miller now formally holding the reigns on the matter, however, it\u0026#039;s unclear how long he\u0026#039;ll stay in the role.