California Democrats have taken their first step toward creating a universal health care system. A legislative committee in the state Assembly advanced a bill on Tuesday that would replace California's private insurance market with a plan paid for by the government. But the proposal is still a long way from becoming law. It faces strong opposition from the state's powerful business interests. And even if it becomes law, voters will have to approve a massive income tax increase to pay for it. Still, Democrats hailed the vote for jumpstarting one of their long-stalled policy goals.