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Where Wal-Mart Failed, Aldi Succeeds % |) W9 z+ W( [: lEven though Aldi, like Wal-Mart, is nonunion, it has faced little resistance, compared with the heated opposition often headed by unions and politicians that Wal-Marts have encountered in larger markets. + z; z8 z% A( R$ Z , E( J$ \8 K" `1 K! S! c4 i, \ ; U: y& P8 W2 l. a0 REstimates are that Aldi, a privately held, nonunion chain, has more than 8,000 stores worldwide and 1,000 in the United States.