WASHINGTON – Democratic congressional leaders and the Obama administration indicated Monday that they will push for greater federal authority to locate electric transmission lines, saying a national power grid stands in the way of developing alternative energy sources. Senate Majority Leader Harry Reid, D-Nev., said he will soon introduce legislation that includes giving federal regulators authority to override states on electric grid placement decisions as part of a package of energy proposals the Senate is expected to take up in the coming weeks. "We cannot let 231 state regulators hold up progress," Reid said, referring to the members of state...