Fuel Fix: Members of the public have filed more than 3,500 comments voicing their opinions on Keystone XL, just a week after the feds once again solicited input on the controversial pipeline. The process likely will set off another battle between supporters and opponents of the project to win the comments numbers game. The new round opened Feb. 5, days after the State Department released its long-awaited final environmental impact statement. Through Wednesday afternoon, the public had submitted 3,514...