U.S. sanctions enforcers have a new sector in their sights: illegal fishing. Last week, the Treasury Department imposed some of its harshest financial sanctions on two large Chinese fishing companies and their top executives, in a major show of force by the Biden administration.  One of the sanctioned companies, Pingtan Marine Enterprise, is publicly listed on the Nasdaq stock market, making it the first time that Washington has imposed “Global Magnitsky” sanctions, which target the