So, on what countries in the Americas did the US impose travel restrictions related to Covid-19? I.e. is there a timeline of US-imposed travel restrictions; better still, is there a timeline that correlates those decisions with the number cases reported in those countries at the time?
As of 22 May, apart from the mutual decisions to close the land borders with Canada and Mexico to non-essential travel, the US has imposed no restrictions on travelers coming from the Americas.
It is worth noting that, even though the land borders may be closed, flights between the US, Canada and Mexico are continuing.