[solveit]

While this is a technically correct answer, I can't help but think the US isn't at particular risk of being colonised by a militarily overwhelming foreign force that also has smallpox. Indeed, if this were a concern, mere immigration law would hardly help!

[sgjohnson]

Technically speaking, the US is the overwhelming military force that also has smallpox (in a BSL-4 lab somewhere), so perhaps his warning was for other countries, just in case?

But the point about the immigration law probably not helping much in this scenario still stands.

[masonic]

>that also has smallpox.

Are you seriously unaware that that's "not a thing"? No US government entity, military or otherwise, has ever deliberately infected a native population with smallpox. You're reduced to making shit up?

[runarberg]

I don’t see your parent implying that anyone deliberately infected other populations with smallpox.

[solveit]

I did not say that anyone was deliberately infecting anyone. But smallpox doesn't care about your intentions.