Agence France-Presse: Angry US lawmakers have skewered BP boss Tony Hayward, accusing him of stonewalling as he dodged a barrage of hostile questions seeking to lay bare the causes of the Gulf of Mexico oil spill. “I can’t pass judgment on those decisions,” Hayward told openly disbelieving members of a key House panel investigating the worst environmental disaster in US history. “I think it’s too early to reach conclusions.” Just a day after BP won praise for bowing to White House demands to set up …