For the first six years of their existence, the Washington Nationals had a firm stance against issuing no-trade clauses to free agents. They adopted the policy from former team president Stan Kasten, but they broke it after Kasten's departure when they gave a full one to outfielder Jayson Werth last year. If they want to lock up one of their top free agent targets this offseason, they may have to do it again. The Nationals are among at least 14 teams who have shown interest in left-hander Mark Buehrle, and there are multiple reports that the former White Sox stalwart is insisting on a no-trade clause in his next contract. That is a position the Nationals are open to.