Washington — As fallout from the war with Iran keeps fuel prices high , few states are making moves to suspend their gas and diesel taxes.  Tax policy experts say suspending the state and federal motor fuel taxes wouldn't be as effective in lowering prices at the pump as one might think, and could come at a cost to the roads and bridges that drivers depend on. The average state gas tax is 32.6 cents per gallon, according to the U.S. Energy Information Administration. The average gas price in