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Lance Schroyer was previously part of Markwayne Mullin's security detail when Mullin was in the Senate.
The Trump administration did not explain the withdrawal of Lance Schroyer's nomination in a statement on the White House website.
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Lance Schroyer, whose nomination for ICE director was withdrawn, is a former Oklahoma state trooper.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 people with frontotemporal dementia, von Economo neurons are among the first brain cells to die.
In a September 2026 report, Dr. Pașca and other researchers warned that scientific oversight is evolving too slowly for brain organoid research.
Dr. Pașca's team found that a lack of oxygen damaged the transplanted human neurons in mice.
Dr. Pașca’s team found that the transplanted human cells were immature, resembling neurons from a third-trimester fetus's brain.
In cognitive tests, mice with human brain cells performed about as well as ordinary mice.
Von Economo neurons only develop in large, social animals such as whales, elephants, and humans.
Scientists discovered that some large human brain cells that grew in mice were a special type known as von Economo neurons.
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.
The mice in the study were engineered without an immune system to prevent rejection of human tissue.
Scientists created organoids from human cortex cells for an experiment.
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.
Bioethicist John Evans stated the cortex is the part of the brain that results in humanness.
Dr. Sergiu Pașca's team at Stanford inserted human brain organoids into young rats.
In an experiment with rats, transplanted human organoids grew to occupy about one-third of one side of the rodent's brain.