1.   Bush already has intervened to prevent a strike by Northwest mechanics and has said he will not allow an airline strike this year.

2.   But the mediation board told Bush there was virtually no chance of an agreement, and recommended that he empanel an emergency Board if the Northwest mechanics struck.

3.   The Bush administration has taken a militant stand against organized labor in the airline business, delaying a strike by Northwest mechanics and promising to prevent other strikes.

4.   For Northwest mechanics, the ongoing negotiations could be further complicated by President Bush.

5.   He also played an important behind-the-scenes role when President Bush blocked a strike by Northwest mechanics, who later settled with the airline.