Archbishop Raymond Burke, the outspoken prelate of St. Louis, and wielder of excommunications, has just been appointed as the Prefect of the Apostolic Signatura. Details at Amy's. This also means that it is quite likely that at the next Consistory, there might be another American Cardinal. Reading the Vatican Bulletin, one also sees that the outgoing Prefect, Cardinal Agostino Vallini, has been named the Vicar of the Diocese of Rome and Archpriest of the Basilica of St. John Lateran, replacing Cardinal Camillio Ruini, who has reached the retirement age.
So, the Archdiocese of St. Louis is now vacant.
How many vacancies in the US now? I've lost count.