bottleneck

Officials say those four 8-foot-wide steel tubes could create a bottleneck that limits how much water makes it to California, Arizona, Nevada and Mexico.

But without a trade deal between the US and China, the fear is that the rare earths bottleneck could return, creating a massive supply chain shock.

Mr Weaver said he spotted them with a German couple and two Spanish nationals in a "bottleneck" between two boulders.

The vast number of attendees caused bottlenecks at entry points, prompting one wag to crack, “What is this, the Second Coming?”

Responding to suggestions that a lorry park should be created on the now-defunct Sevington Inland Border Facility, Mr Howe said the plan would "create a huge bottleneck" and would not stop tourist traffic issues.