When Donald Trump entered his second term as president, he found a full-throated supporter in South Africa’s chief rabbi. Chief Rabbi Warren Goldstein said in February that South Africans “should welcome the Trump administration’s interventions” in the country’s affairs, praising the president in a widely distributed video message. A vocal critic of the South African government, Goldstein backed Trump’s opposition to South Africa for its cooperation with Iran and its new land expropriation law, which Goldstein believes will slow the country’s already sluggish economy. But since Trump decided to admit some white South Africans into the United States as refugees...