Liam was detained last month near Minneapolis during an immigration enforcement operation in which his father was also taken into custody by federal agents.
In a federal bellwether case, the jury ordered the ride-hailing giant to pay $8.5 million to Jaylynn Dean, who said one of its drivers assaulted her in 2023.
The announcement that the second family is expecting a fourth child has turned Ms. Vance into a symbol of success for proponents of conservative family values.