Appointment and initial advisorship In December 2016, Trump named Miller as his
senior advisor to the president for policy. His role was later clarified to have oversight over the
Domestic Policy Council. and his positions do not require Senate confirmation. Bannon and Miller co-wrote many of Trump's initial
executive orders, including the order that instituted the
Muslim travel ban. The Trump White House had two ideological factions: the Washington wing centered on
chief of staff Reince Priebus and
press secretary Sean Spicer, and the Breitbart wing around Miller and Bannon. According to
Politico, allies of Priebus were "wary" of Miller, among other aides critical of moderating Trump's politics. Miller led a
principals committee meeting on immigration in January 2017, according to the
Los Angeles Times. Miller's dominant position in developing Trump's
immigration policy garnered him criticism. Miller wrote Trump's
speech to a
joint session of Congress that month. He sought to purge the
federal government of
Barack Obama's political appointees. The dynamics of Miller's influence in the
Trump administration shifted by April as Bannon entered into conflict with Jared Kushner; Miller informed colleagues that he was not affiliated with Bannon. That month, he began to work with
Office of American Innovation, led by Kushner, and began focusing on energy and regulatory issues. Miller remained an ally of Bannon. Miller supported the
dismissal of James Comey, the
director of the Federal Bureau of Investigation, and drafted the letter firing him. He and Bannon were allegedly responsible for removing a line in Trump's speech before the
2017 Brussels NATO summit mentioning Article 5 of the
North Atlantic Treaty, leading to a dispute with
H. R. McMaster, the
national security advisor. In June,
Politico reported that secretary of state
Rex Tillerson had sparred with Miller over immigration after Miller told Tillerson that the
Department of State should be tougher on immigration. Prior to assuming the position of chief of staff,
John F. Kelly worked to develop a relationship with Miller. In August, Miller publicly sparred with
CNN's
Jim Acosta—whom he accused of "cosmopolitan bias"—in a press briefing for the
RAISE Act. Days later,
Reuters reported that Miller was a contender for
White House communications director, succeeding
Anthony Scaramucci. operation In Kelly's
White House Office, Miller was largely successful in influencing Trump. Previously when Kelly was the
secretary of homeland security, Miller unsuccessfully supported appointment of the presidents of employee unions with no supervisory experience to agency heads (of
U.S. Immigration and Customs Enforcement and
U.S. Customs and Border Protection). Consequently, Miller and his allies blocked Kelly in naming Alan Metzler as his chief of staff, who instead offered the position to
Kirstjen Nielsen.
Elaine Duke succeeded Kelly as the acting secretary of homeland security. Miller opposed appointing Duke to the position permanently. He advocated for pardoning
Joe Arpaio, the sheriff of
Maricopa County who was convicted of
contempt of court, securing
his release from prison. In September, Trump announced a gradual end to
Deferred Action for Childhood Arrivals (DACA), a program that Miller had encouraged Trump to end.
The New York Times reported that Miller had been advocating for adjusting the refugee quota established in the
Refugee Act from 110,000—set by Obama before he left office—to 15,000. Though Trump later stated he would work with
Democrats on a deal to restore DACA and he planned to set the quota at 45,000 refugees, Miller's efforts had an impact on immigration policy. He outlined several hard-line immigration proposals, including hiring ten thousand immigration enforcement agents, in a draft that month, after Trump had reached a tentative agreement with Senate minority leader
Chuck Schumer and House minority leader
Nancy Pelosi on DACA. In January 2018, as
a federal government shutdown neared over disputes involving DACA, Trump privately stated that he was willing to negotiate to extend legal status to immigrants brought to the United States illegally as children; in response, Kelly and Miller rejected a deal unless it was attached to austere immigration restrictions. Republican negotiators accused Miller of preventing a deal from being struck. Miller wrote that year's
State of the Union Address. He advocated for a veto of the
Consolidated Appropriations Act, a bill that would fund
that fiscal year, over funds for the
Trump wall, pointing to the possibility of a Republican loss in
that year's elections. Miller worked against the Department of State's
Bureau of Population, Refugees and Migration. After Kelly Sadler was dismissed over comments she made about the political viability and mortality
Arizona senator
John McCain—who was suffering from brain cancer—Miller had
Julia Hahn appointed to cover her communications work in order to advance Trump's hardline immigration messaging. Miller sought to garner support for a bill paralleling his immigration framework in June.
Immigration moves Miller was an advocate for the Trump administration's
family separation policy. In April, he was "instrumental" in Trump's decision to intensify enforcement of the policy, according to
The New York Times, and was critical to Trump's endorsement. The policy incited controversy, including an internal conflict, targeted towards Miller in June. Amid the backlash, Miller continued to lead a plan to use executive authority and rule changes to institute an immigration crackdown ahead of that year's elections, believing immigration to be a key issue. He conducted meetings privately, in fear of "hostile bureaucrats" leaking policies, according to
Politico. That month, the
Supreme Court affirmed the Muslim travel ban; chief justice
John Roberts supported Miller's assertion that the president could use
Section 212(f) of the
Immigration and Nationality Act to "suspend the entry of all aliens or any class of aliens" through any necessary means. In an effort to quell outcry, Trump signed an executive order ending the practice of family separation. According to the
Financial Times, Miller sought to ban student visas for Chinese nationals, but his efforts were halted by
Terry Branstad, the
ambassador to China. In August,
The New York Times reported that the Trump administration was considering a second reduction in the refugee quota. The
Times noted that opponents of Miller—including Tillerson and Duke—had been ousted in favor of anti-immigrant officials, giving Miller's plan a greater chance of success. He privately urged Trump to continue on his border wall. In September, secretary of state
Mike Pompeo announced that the quota would be set at 30,000. That month, the Department of Homeland Security proposed a rule denying
lawful permanent residency to immigrants who have received government benefits, such as the
Supplemental Nutrition Assistance Program,
Temporary Assistance for Needy Families,
Medicare, and
Section 8. The volume of immigration actions the following month—the deployment of federal troops to the
Mexico–United States border and proposed executive action on blocking the
Central American migrant caravans and ending
birthright citizenship—was described by a Republican close to the White House as "a dream come true" for Miller. As
a second federal government shutdown in December 2018 neared over funding the Trump wall, Miller publicly stated that the Trump administration would "do whatever is necessary" to build the border wall, including shutting down the government. In a meeting to resolve the shutdown, Kushner defended Miller as an expert on the subject of immigration, though Kushner's support for legal immigration led to a conflict with Miller. Miller's influence with Trump led to concerns from senior Republican aides that he could convince Trump that accepting a compromise would amount to humiliation. Trump worked on
that year's State of the Union address with Miller, who took a more active role in speechwriting. Miller opposed
Ronald Vitiello's nomination as
director of Immigration and Customs Enforcement and Nielsen's tenure as secretary of homeland security; Trump withdrew Vitiello as his nominee Miller leveraged the uncertainty to pursue an aggressive immigration policy, pressuring mid-level officials at federal departments and agencies to be more vigorous in halting immigration. He pushed for the purge to continue and for several immigration policies, including housing migrants in border tent cities and extending detention times, to be implemented. The purge led to concerns about Miller's authority from congressional Republicans, including
Texas senator
John Cornyn. According to
The New York Times, Miller orchestrated the purge.
Kevin McAleenan, the acting secretary of homeland security, resisted Miller's continued efforts to dismiss officials. Miller was influential in Trump's decision to name
Ken Cuccinelli as the acting director of
Citizenship and Immigration Services. Miller advocated for the
Department of Housing and Urban Development to force the eviction of undocumented immigrants. In June, Trump imposed tariffs on
Mexico over the border crisis, a suggestion that had been offered by Miller and
Peter Navarro, the director of the
Office of Trade and Manufacturing Policy. In September, Miller sought to further reduce the refugee quota. In December, he developed a plan to use information the
Department of Health and Human Services (HHS) had on migrant children to target them and their families for deportation. The plan would have also embedded immigration enforcement agents in the department's
Office of Refugee Resettlement. The effort was rejected by officials at the Department of Health and Human Services. Miller led speechwriting for the
2020 State of the Union Address, though he sought to temper his influence on its tone. The
COVID-19 pandemic provided opportunities for Miller to advance his immigration policies. The foundation for Miller's actions came in prior attempts to use the president's authority in relatively minor health emergencies. In April, Trump suspended family-based immigration. Miller told conservative allies in a private conference call that the halt to immigration was one step in a broader plan. Miller sought to influence HHS to delay the admission of migrant children into shelters run by HHS and to fingerprint adults in households where refugee children are released; his proposals were considered by the department's refugee office. In May, chief of staff
Mark Meadows suggested that Miller should serve as the acting director of the
Domestic Policy Council after
Joe Grogan's resignation, though Kushner successfully proposed
Derek Lyons instead. After his wife Katie tested positive for
COVID-19 that month, Miller was forced to quarantine. He continued to push for changes to immigration policy to follow up on Trump's order in April, raising the standard of proof for asylum seekers. According to secretary of defense
Mark Esper, he reportedly called for as many as a quarter of a million troops to be stationed at the border with Mexico. Miller participated in debate preparation sessions against
Joe Biden. In October, Miller was among those who tested positive for COVID-19 amid
an outbreak of the virus at the
White House. Miller remained with Trump after the
January 6 Capitol attack; he wrote the speech Trump gave preceding the attack. Miller contributed to Trump's speech condemning the attack after
his second impeachment. In the final days of Trump's term, Miller continued to work to implement Trump's immigration policies. ==Between Trump presidencies (2021–2025)==