(Reuters) – The Trump Plaza Hotel in Atlantic City could shut its doors in September and lay off 1,000 workers, a local newspaper reported, in what could make it the fourth casino to close this year in the faltering New Jersey resort city. The Press of Atlantic City said in a story posted online late on Friday that an official from Trump Plaza called New Jersey state Senator Jim Whelan and told him the casino, which is owned by Trump Entertainment Resorts, expected to issue layoff notices on Monday ahead of a Sept.