Yeah if aliens for some reason wanted an invasion of the US homeland by zombie mindcontrolling the army of one other country (and had some way to negate nukes)

Yeah if aliens for some reason wanted an invasion of the US homeland by zombie mindcontrolling the army of one other country (and had some way to negate nukes) their best chance wouldn't be China or the EU but Canada and Mexico, just because of the developed land transport infrastructure between the countries