the federal surface mining act (fsma) limits the circumstances under which strip mining can be used, and requires all strip mines to be returned to their original contour once the mining operation is complete. congress has found that strip mining can cause serious environmental harm by causing erosion, landslides, and polluting rivers. the government sues big rock candy mine inc., to clean up their site. the company claims that the fsma exceeds congressional authority under the commerce clause. who will prevail?