Here’s the point. Once upon a time, the US engaged in thermonuclear war brinksmanship with the USSR because of Russian missiles being placed on Cuban soil. The weapons of war have evolved. Bioweapons technologies have matured. What would the USA do if Russia was transforming Mexico into a client state and had placed biowarfare research laboratories along our southern border. Would we invade? I strongly suspect so.
Are “we” the good guys or the bad guys here?