Who proposes a new tax hoping to see not a penny in revenue? A Montana legislator who wants to change the way Wal-Mart pays its workers there. Sen. Ken Toole, D-Helena, is sponsoring a bill that all but names Wal-Mart as the object of the tax: A big retailer that doesn't pay an entry-level salary of at least $22,000 a year and that hires more than half part-timers will be charged a progressive tax of 1 to 2 percent on its gross receipts over $20 million a year. It's just the latest proposal by local governments to try to collect...