Fresh from the hostile grass arena of Bethpage, where supporters of the US Ryder Cup team spent the weekend abusing their European opponents, Washington correspondent Keith Duggan returns to the podcast to discuss the latest:

• Some commentators have tried to link the boorish behaviour of US golf fans to the ascendancy of Trumpism. Is that justified?

• What lies behind the steady level of popular support for president Trump?

• With the dust settling on Charlie Kirk's killing and the febrile aftermath, what meaning will those events hold in the future of the MAGA movement?

• The US government shutdown - why it is happening and what it means.

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