“I am not going to order that the plane turn around,” said the judge, Brian E. Murphy of the Federal District Court in Boston. Instead, he said, any migrants in Department of Homeland Security custody must not leave U.S. control once the plane landed, at least until a hearing Wednesday to determine whether they had received adequate due process.

The South African government denies President Trump’s claims of persecution, and said white farmers are falling victim to the country’s crime problem.

President Donald Trump pushed false claims of a genocide of White Afrikaner farmers at a meeting with South African President Cyril Ramaphosa on May 21.