Indigenous populations commit racial and cultural suicide if they allow their country to be invaded. A sovereign nation, not run by traitors, will enforce its borders by any means necessary. The situation is like a contract. The country gives fair warning to potential invaders that if the borders are violated, deadly force will be used to stop the invasion.

Border policy should be announced via popular media, with ongoing warning given by signs. Once fair notice is given, there need be no consideration as to whether invaders are men, women, or children. Reprisal should be carried out as necessary using snipers, strafing from helicopters, and satellite lasers from space.

At this writing, the southern border of the United States has been under siege since 2014. If the United States is to survive as a nation, this invasion must be stopped. Every invader so far apprehended, should be deported, and if they come back, executed. It's perfectly just to resist invasion with deadly force, if people are made aware of the contractual terms in advance.