WASHINGTON (AP) -- Supporters of the Keystone XL pipeline, which would run from Canada to the Gulf, say the privately funded, $8 billion project is a critically needed piece of infrastructure that will create thousands of jobs and make the U.S. dependent on oil from friends, rather than foes.Critics claim it will disastrously increase the pollution blamed for global warming and put communities along its 1,179-mile route at risk for a damaging spill, all for oil and products that will be exported anyway.Which is it? As pipeline supporter Sen. Joe Manchin, D-W.Va., puts it: \You're entitled to your own opinion