The Supreme Court has dealt a blow to young immigrants who turn 21 while their petitions for U.S. visas are still pending. Each year, tens of thousands of young immigrants “age out” of the years-long visa process after applying with their families. On Monday, the court backed the Obama administration’s stance that most immigrants must restart their wait for a visa after they turn 21. Only those with applications filed by parents who are permanent U.S. residents can keep their place in line.