If unions no longer work to improve the lives of their members, why do they exist?

Ann Coulter has the answer:

Ann Coulter on the vicious cycle: "The high salaries and magnificent benefits paid to government employees are used to fund the public sector unions, which then funnel a portion of that money back to the Democrats, who vote for the pay packages of government workers. The unions function as a pass-through from the taxpayers straight to Democrats running for re-election."

Thanks For Raising My Taxes - What Else Can I Do For You? - HUMAN EVENTS