Amazon's (AMZN +0.5%) battle to allow California residents a referendum on paying online sales...

|By:, SA News Editor

Amazon's (AMZN +0.5%) battle to allow California residents a referendum on paying online sales taxes heats up again. Two Democrats set the stage for a pitched legal battle in state court, by declaring the vote invalid. Amazon still has an ace up its sleeve with a U.S. Supreme Court decision restricting states' rights to collect sales tax.