Sen. Barack Obama has said he thinks revisions to the Mining Law of 1872 passed by the House are too onerous on companies. Campaigning in Nevada, Obama said the House proposal to impose a four percent royalty on mining companies operating on federal land was too high. Obama’s position was a hit with the National Association of Manufacturers. “We couldn’t agree more,” NAM said in its ShopFloor blog. The environmental blog Grist couldn’t agree less.