Trump Entertainment Resorts said yesterday that it will close the Taj Mahal on Dec. 12 if its main union doesn't drop an appeal of a court-ordered savings package, Dow Jones Daily Bankruptcy Review reported today. The union is appealing a bankruptcy court order that terminated the union contract, canceling health insurance and pension coverage. If the appeal isn't withdrawn by the end of the month, the casino said that it will close and 3,000 jobs will be lost.