White House press secretary Jen Psaki said that there is “serious progress” being made in dealing with supply chain bottlenecks at two major ports in California as they moved to 24/7 operations. “Port of Los Angeles Executive Director Gene Seroka said that we have already cut in half the amount of cargo that is sitting on the docks for 13 days or longer,” Psaki told reporters. “That is serious progress, and this commitment from the railroad is just the latest step toward a 24/7 supply chain, and the result of important partnerships between business, labor, and the port leadership.” Psaki also said that Union Pacific Railroad, the second-largest railroad operator in the United States, would serve the ports of Los Angeles and Long Beach with 24/7 service. “We’re going to continue to evaluate steps that need to be taken in order to move toward a 24/7 global supply chain,” Psaki said, saying …