When things are going well, the international shipping supply chain is largely invisible and can be taken for granted by most of us.  These days things are not going well. The pandemic has triggered massive trade imbalances. Critical links in the supply chain are broken, creating massive backlogs and bottlenecks in container shipping. Recently, the news program 60 Minutes featured a look at the outdated infrastructure causing America’s supply chain crunch.

What’s caused America’s supply chain crunch?