Hence a backup country. I already covered that.

But while countries go from unfriendly to attacking you overnight, they don't generally go from friendly to attacking you overnight.

Overnight, Canada went from being an ally of the US to being threatened by annexation (and target #1 of an economic war).

If the US wants its state-puppet corporations to be used for integral infrastructure by foreign governments, it's going to need to provide some better legal assurances than 'trust me bro'.

(Some laws on the books, and a congress and a SCOTUS that has demonstrated a willingness to enforce those laws against a rogue executive would be a good start.)