Legislation was amended to require private financing for at least half the stadium construction costs, a provision not contained in the September agreement, reports ESPN.com.
If the law stands, baseball's likely response is thought to be to have the Expos team play the 2005 season at Washington's RFK Stadium - where it would be known as the Nationals - while baseball's search committee resumes negotiations with cities that desire the team.
One option could be Las Vegas, which was among the cities competing for the Expos and is still lobbying for a team.
