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The Trump administration did not explain the withdrawal of Lance Schroyer's nomination in a statement on the White House website.
Lance Schroyer was previously part of Markwayne Mullin's security detail when Mullin was in the Senate.
David Venturella, a former ICE official who also worked for a private prison company, is the acting chief of ICE.
Donald Trump wrote on social media in late June that Lance Schroyer has experience getting 'Illegal Aliens OFF our streets' and loves ICE personnel.
Immigration and Customs Enforcement (ICE) has not had a confirmed director since 2017.
Lance Schroyer has served as a Department of Homeland Security adviser since Markwayne Mullin became secretary.
President Trump withdrew Lance Schroyer's nomination for ICE director less than three months after it was announced.
Lance Schroyer, whose nomination for ICE director was withdrawn, is a former Oklahoma state trooper.
In a September 2026 report, Dr. Pașca and other researchers warned that scientific oversight is evolving too slowly for brain organoid research.
In people with frontotemporal dementia, von Economo neurons are among the first brain cells to die.
Dr. Pașca's team found that a lack of oxygen damaged the transplanted human neurons in mice.
Hongkui Zeng of the Allen Institute said a study was a proof of concept that it is possible to create a human-dominated cortex in a mouse.
Dr. Pașca’s team found that the transplanted human cells were immature, resembling neurons from a third-trimester fetus's brain.
Scientists discovered that some large human brain cells that grew in mice were a special type known as von Economo neurons.
Von Economo neurons only develop in large, social animals such as whales, elephants, and humans.
In cognitive tests, mice with human brain cells performed about as well as ordinary mice.
Bioethicist John Evans stated the cortex is the part of the brain that results in humanness.
Human cortex organoids were placed into empty spaces in the brains of engineered mice.
In the experiment, transplanted human neurons multiplied from a few hundred thousand to as many as 4 million cells.
Genetically altered mice used in a study had brains that were almost entirely missing the cortex.