President Donald Trump recently allowed 59 white Afrikaner farmers to resettle in the U.S. as refugees, saying they are losing their land in South Africa and are targets of genocide.

When Trump was sworn in Jan. 20, the national average price of a gallon of regular gasoline was $3.11. After falling to $3.06 and rising to $3.24 in the subsequent weeks, a gallon on May 12 cost $3.12 ...