Wal-Mart Bribery Scandal Complicates U.S. Expansion Plans In Los Angeles, a Wal-Mart building permit is getting a once-over. In New York, the City Council is investigating a possible land deal with the retailer's developer in Brooklyn. A state senator in California is pushing for a formal audit of a proposed Wal-Mart in San Diego. And in Boston and its suburbs, residents are pressuring politicians to disclose whether they have received contributions from the company. All of it in the past week. Wal-Mart has worked hard in recent years to polish its reputation and give elected officials, community groups and shoppers a reason to say yes to their stores, especially as it pushes aggressively into big - and historically hostile - cities. Now, the revelation of a bribery scandal involving the retailer's Mexican subsidiary is giving critics a new reason to say no. "Overnight, the environment has shifted in terms of Wal-Mart's strategy in big cities, in winning over local politicians," said Dorian T. Warren, a political science professor at Columbia who is writing a book about Wal-Mart's efforts to expand into Chicago and Los Angeles. The New York Times disclosed last week that Wal-Mart had found credible evidence that its Mexican subsidiary - the retailer's biggest foreign operation, which opened 431 stores last year - had paid bribes and that an internal inquiry into the matter had been suppressed at corporate headquarters in Arkansas. The Mexican government has begun investigations into the retailer's dealings with local officials. Felipe Calderón, the Mexican president, said last week that he was "indignant" about the company's behavior, and some elected officials across the United States joined the chorus of outrage. In other countries where Wal-Mart operates, including China and India, the reaction was slower, but analysts said they expected the company to face significant new obstacles. Wal-Mart last week took several steps intended to demonstrate it was serious about getting to the bottom of the bribery scandal - and preventing anything like it happening again - but the damage from the revelations could be problematic, analysts said. "It gives more power to critics, and that might prove to be the biggest negative of all," said David Strasser, an analyst with Janney Montgomery Scott. In the United States, Wal-Mart has largely exhausted places in suburban and rural areas to build new stores, and is focusing on many of the nation's biggest cities. That means a lot of red tape for approvals. In the last few years, Wal-Mart has smoothed the way with donations to politicians and local nonprofit organizations, and arguments that it helps economic growth and provides healthy groceries. Steven Restivo, a Wal-Mart spokesman, said the bribery investigation would not affect those expansion plans. "We remain committed to opening stores all across the U.S., including large cities," he said. There has always been opposition to the new stores - for years, small store owners, for example, complained they would be put out of business by Wal-Mart's low prices - but the scandal in Mexico has provided opponents with new ammunition. Union leaders, who have been particularly critical of Wal-Mart's workplace practices, called last week for the resignation of the chairman, S. Robson Walton, and the chief executive, Michael T. Duke. "The corruption scandal and reported cover-up exposed an unacceptable failure of leadership within Wal-Mart," said Joe Hansen, president of the United Food and Commercial Workers International Union. Most of the stepped-up opposition, however, has been directed at blocking specific expansion plans. In New York, City Councilman Erik Dilan said the housing and buildings committee that he heads will conduct an investigation into a land-use transfer at a Brooklyn site Wal-Mart has been considering. The New York state comptroller, Thomas P. DiNapoli, was already reviewing a contract for the site, a vacant 14-acre lot in East New York owned by the state. In Los Angeles, opponents of a Wal-Mart site in Chinatown were using the bribery scandal to supplement an appeal they have filed that would rescind the project's building permit. Vikas Bajaj contributed reporting.