To raise revenue, the commissioner's office moved 22 of the team's 81 home games this season to Hiram Bithorn Stadium in San Juan.
"Puerto Rico has made a proposal to play all 81 home games in Puerto Rico, and it has not been rejected," Bob DuPuy, baseball's chief operating officer, said before the All-Star Game.
Northern Virginia; Portland, Ore.; and Washington, D.C., are all trying to land the Expos on a permanent basis, but baseball owners want to have a complete financing plan for a new ballpark in place before making a decision.
DuPuy said no particular plan was a front-runner.
The Expos are averaging 12,206 in attendance for home games, the lowest in the major leagues. They are averaging 11,133 in Montreal and 14,216 in Puerto Rico, where they have played 16 games.
Albert Pujols' altercation with two former Phillies in San Diego is going to cost him and St. Louis. The only question is how much.
When asked if the Cardinals could expect Pujols to face disciplinary measures, Bob Watson, Major League Baseball's discipline czar, said that "would be correct."
Watson told the St. Louis Post-Dispatch that a decision probably would come Friday.
"Fighting has no part in the game. You can do what you want to do, but don't be throwing any blows," Watson said.
"We've got to stop this. What is it, eight or nine on-field things that have gone on this year? All last season, we only had two. There's too much testosterone or something."
Pujols was hit in the shoulder blade on the first pitch he saw from Adam Eaton in St. Louis' eventual 3-1 win over San Diego on Sunday, a day after Pujols lingered at the plate following his game-winning, two-run homer in a 9-7, 11-inning victory.
Eaton was immediately ejected; Pujols, Padres catcher Gary Bennett (also a former Phillie) and San Diego manager Bruce Bochy also were thrown out.
During a confrontation after he was hit, Pujols punched Bennett in the face.