(November 25, 2015, 2:46 PM EST) -- SAN FRANCISCO — The United States on Nov. 23 filed a motion in federal court in California seeking to dismiss claims brought by man who sued the government after a large seedpod fell on his head at a national park and caused permanent damage (Sean J. Mace v. U.S. of America, et al., No. 3:15cv4060, N.D. Calif.)....