President Biden: donor says it's "crunch time"

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Rahul Tandon hears from Biden donor Jeffrey Sonnenfeld, who says it's "crunch time" for the President as pressure mounts over whether he should try for re-election. Meanwhile the US administration imposes tariffs on Mexican steel imports - those which have been partly made in China. Is this an anti-China move - or a election ploy? We also find out why the charge is very much reduced on lithium-ion batteries - with prices down 51% in China, this year alone.