September 28, 2023, Opinion: "Previous optimism that cross-border supply chains would improve efficiency for firms and open up growth opportunities for countries has been tempered by concerns that global value chains now expose firms and countries to the risk of disruptions. This column analyses the evolution of global supply chain patterns centred around the US over the last four decades, with a focus on the post-2017 period. The findings suggest that the ongoing reallocation of global value chain activity comes with costs that need to be monitored and assessed, and that policies to encourage shifts in sourcing patterns may ultimately fail in their objective to reduce US dependence on supply chains linked to China."