Trump's mother-in-law came to the USA - through a law that he rejects. Records show that Amalija Knavs was sponsored for a green card by an adult child.
Trump is the likely Republican candidate for the 2024 US election against Democratic President Biden. The 1965 federal law states that U.S. citizens can bring minor children and parents to the United States. Citizens can have siblings and adult children join them, but they usually have to wait longer for a visa.