John Sanders, the acting commissioner of Customs and Border Protection, announced in an internal email Tuesday that he had handed in his resignation letter — effective July 5 — to acting Secretary of Homeland Security Kevin McAleenan on Monday.

Why it matters: Sanders' resignation as the administration's top border enforcer follows heightened scrutiny over the past week of the conditions at migrant children's detention centers at the southern border.

The latest: Tuesday's reshuffle continued as 2 DHS officials told the Washington Post that Trump intends to name Mark Morgan — the acting director of U.S. Immigration and Customs Enforcement — as Sanders' replacement.

Context: News broke Monday that the U.S. government had removed most children from a Border Patrol station in Clint, Texas, following reports that more than 300 children detained there were exposed to dangerous and unsanitary living conditions.

  • On Tuesday, however, administration officials said that more than 100 children had been returned to the facility after concerns about overcrowding had been alleviated, the New York Times reports. It's unclear whether Sanders' departure is connected to the recent controversy.
  • Sanders assumed the role as the head of CBP after McAleenan moved into the role of acting DHS Secretary following Kirstjen Nielsen's departure.

In his resignation letter to McAleenan, Sanders said he "quoted a wise man" who told him: "'Each man will judge their success by their own metrics.' Although I will leave it to you to determine whether I was successful, I can unequivocally say that helping support the amazing men and women of CBP has been the most fulfilling and satisfying opportunity of my career."

Go deeper: Texas Republican says conditions in immigrant centers are worst he's ever seen

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GOP fears "little guy" attack on Amy Coney Barrett

Illustration: Eniola Odetunde/Axios

White House aides and Senate Republicans have spent the past week readying binders full of messaging and rebuttals to guide Judge Amy Coney Barrett to a pre-Nov. 3 confirmation. "We knew for days it was going to be Amy," a Senate GOP aide involved in her confirmation process told Axios.

What we're hearing: Beyond the expected questions about her views on religion, abortion and health care, Republicans worry about Democrats painting Barrett as someone who is insensitive and unfair to “the little guy,” one source involved in the talks told Axios.

Updated 30 mins ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 4:30 p.m. ET: 32,938,616 — Total deaths: 995,465 — Total recoveries: 22,782,724Map.
  2. U.S.: Total confirmed cases as of 4:30 p.m. ET: 7,101,774 — Total deaths: 204,618 — Total recoveries: 2,750,459 — Total tests: 100,492,536Map.
  3. States: 3 states set single-day coronavirus case records last week — New York daily cases top 1,000 for first time since June.
  4. Health: The long-term pain of the mental health pandemicFewer than 10% of Americans have coronavirus antibodies.
  5. Business: Millions start new businesses in time of coronavirus.
  6. Education: Summer college enrollment offers a glimpse of COVID-19's effect.

Debate commission co-chair: We don't expect moderators to fact-check candidates

Presidential Debate Commission co-chair Frank Fahrenkopf Jr. said Sunday he doesn't expect Fox News anchor Chris Wallace or any of the other moderators to fact-check President Trump or former Vice President Joe Biden at the debates.

What he's saying: "There's a vast difference between being a moderator in a debate and being a reporter who is interviewing someone," Fahrenkopf said on CNN's "Reliable Sources."