This isn't much consolation, but the US wasn't the only country whose citizens were far, far more likely to die of Covid-19 than its non-citizens. Here is a table of selected
UK9.8
Spain8.8
Italy8.4
Sweden7.6
US7.1
France6.7
Brazil5.2
Mexico3.9
Canada3.3
Germany1.5
Russia1.1
India0.2
Philippines0.2
Japan0.1
China0.04