Gov. Jim Pillen of Nebraska is facing criticism after he dismissed a news article about environmental concerns at his hog farms, saying that the reporter who wrote it was from “Communist China.” The reporter, Yanqi Xu, 27, revealed her findings in an article published Sep. 7 by The Flatwater Free Press that detailed nitrate levels “far above” the legal drinking water limit at more than a dozen farms owned by Mr. Pillen, a Republican. While the farms had brought prosperity to Platte Center, a village about 60 miles northwest of…