CAMBRIDGE – Argentina and its bankers have been barred from making payments to fulfill debt-restructuring agreements reached with the country’s creditors, unless the 7% of creditors who rejected the agreements are paid in full – a judgment that is likely to stick, now that the US Supreme Court has upheld it. Though it is hard to cry for Argentina, the ruling in favor of the holdouts is bad news for the global financial system and sets back the evolution of the international regime for restructuring sovereign debt.