Please suggest an appropriate international alternate for a plane just about to land in Denver with an hour of fuel remaining.

Alternate airports are picked based with regards to all kinds of contingencies (many of them meteorological), but "the US closes literally every airport" is not one of them.

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aschla 5 hours ago | parent [-]

That likely falls within the case-by-case basis the FAA mentioned, and would likely be allowed to land at a U.S. airport that has capacity.

	▲	filleduchaos 2 hours ago \| parent [-]
		And that's exactly why you got the reply that international flights MIGHT not have enough fuel left to divert (and thus obviously have to be allowed to land within the continental US), but for some reason you insisted that every flight would be able to.