<p>When the conversation turned to the minimum wage on Saturday night, the contrast between Democrats and Republicans couldn't have been more stark.</p><p>Asked if, as the Republicans argued on Tuesday, raising the minimum wage would cause job losses, Bernie Sanders made his case on social justice grounds.</p><p>"Let me say this. No public policy doesn't have in some cases some negative consequences," he said in explaining his call to raise the federal minimum wage to $15 dollars an hour.