SACRAMENTO – The Legislature may ask taxpayers to accept $2.3 billion in new borrowing to fund a backlog of transportation projects sidelined when lawmakers repeatedly siphoned the state's roads budget. Also, Gov. Arnold Schwarzenegger and lawmakers have offered competing measures that would give voters a chance to tighten the clamp on future transportation raids. Voters have already spoken. In 2002, they approved Proposition 42 by a 7-1 ratio. The measure explicitly dedicated the state sales tax on gasoline to roads and public transit. But an escape clause in the proposition has allowed lawmakers to suspend the requirement and borrow $3.6...