> If there was one thing Trump was all in on, it was closing the southern border. Is there any source that even suggests that the US's "southern border" played

> If there was one thing Trump was all in on, it was closing the southern border. Is there any source that even suggests that the US's "southern border" played a remotely relevant role in the US's pandemic? I mean, COVID spread like wildfire in the US throughout a timespan where the US's central government was quite militant in either denying or downplaying it's gravity. Even today we see states and cities taking militant stances in refusing to implement basic public health precautions. Why is the US's "southern border" suddenly relevant regarding covid-19?