Not too bad, but I think you're portrayal of the border militias is a bit harsh. Most members are more concerned about their private property rights, which are a bit different than those in Sweden. Many have had large numbers of illegals cross their property and in the process vandalize and or steal much of their property. Many are not against immigration as some of the larger ranches hire illegal immigrants as ranch hands. Also many of them are against the border walls as the government wants to take large amounts of their land to build said wall.
Some of the militia organizations have set up aid stations along migration routes or left water and food out on their land for the passing illegals. And many of the militia groups are pushing for immigration reform that sets up work visas allowing workers to cross the border safely without having to cross private property.
Of course in an alternate reality where a nationalistic Mexico is spewing pan-Hispanic rhetoric there is the possibility of these militias radicalizing in response. And I do like the reverse Pancho Villa raid into Mexico. But who will be the Mexican Ambrose Bierce?
http://en.wikipedia.org/wiki/Ambrose_Bierce
Benjamin