“Musk arrived in Palo Alto in 1995 for a graduate degree program at Stanford University but never enrolled in courses, working instead on his startup,” according to the Washington Post. That means Musk committed at least two immigration violations. First, by failing to take courses, he violated his student status. Second, he did not have authorization to work legally in the United States.

Peter Thiel was brought to the United States by his parents from West Germany when he was about one year old, and the family initially settled in Cleveland, Ohio.

Thiel's family first relocated from the US to South Africa around 1971, primarily because his father, Klaus Thiel, a mining engineer, secured work opportunities there. The family returned to the US in 1977, settling in Foster City, California; sources do not specify a precise reason for the return, but it coincided with the shift away from the apartheid-era environment in South Africa.