When Los Angeles mayor Eric Garcetti last Saturday announced the increase in the city’s minimum wage from an hour to by 2020, he said it would end “back-breaking poverty” for many and “help 600,000 Angelenos pay their rent, provide for their children and build their savings accounts.” He said the move “would serve as a national model,” according to a report in the Los Angeles Times . While the L.A. move could prompt other U.S. cities and states to follow suit, and push the federal government to move faster with its $10.10 an hour goal, it could have other unintended consequences as well, according to experts. “Small businesses are already starting to agitate about what this is going to do to competition if only isolated cities move to higher minimum wages,” said Jerry M. Newman , professor in the organization and human resources department at the University at Buffalo.…