[Tench_Coxe]

"Law experts said the basic concept of international law is that every country is a sovereign nation, and that no other country can interfere or invade another's borders without permission."

Pancho Villa and Black Jack Pershing

'Cept in this case, it'll probably be US citizens doing the work the US government won't do.

[ARCADIA]

"The tricky question is whether they are acting in an official or unofficial capacity,"

As long as they wear the uniform; they should be presumed to be official.

[DumpsterDiver]

Law experts said the basic concept of international law is that every country is a sovereign nation, and that no other country can interfere or invade another's borders without permission.

This must only apply to the military and not to the citizens of Mexico, right?