Former prosecutors and academics are divided on Manhattan DA Cyrus Vance Jr.’s chances of success in avoiding New York’s restrictive double jeopardy laws in his office’s pursuit of former Trump campaign chairman Paul Manafort Jr.

Vance’s decision to secure an indictment against Manafort was clear enough when it was announced just moments after the former Ukrainian lobbyist was sentenced to a total of seven and a half years in federal prison by U.S. district judges in the Eastern District of Virginia and the District of Columbia.