No. That's not what I said, or meant. Mexican immigration is the significant problem, unlike the the other geographic areas you mention. They are not, as is Mexico, on our Southern Border. Therefore, Mexico IS a special and unique situation whether we like it or not. It will require special measures to resolve.
Now I know a lot of people want to build a wall on our Southern Border and staff the North side with the military. That won't stop immigration, they'll still come by boat in the night or some other way. At the same time, a wall will create hatred and terrorists against the US on the Mexican side and a whole new group of Democrats on the American side. Build a wall and we'll have Democrats in the White House, Congress, half the states governors mansions and state houses.
The reality of Mexico is that it has become less than a foreign country, yet is more than a state. No other country has this particular reality. Mexico's unique proximity to the US is a fact we can't ignore. Once this is realized, the problems can begin to be solved.
No. I am not for amnesty or open borders, which would be your next question if you chose to reply. The US needs to set parameters for Mexico and Mexicans to meet that will provide the security that the US must demand because of terrorists and still provide Mexican labor to legally access the American labor market.
Mexico just has to reform and the country could actually become very liveable --- for the Mexicans and for Americans also. The weather is great, it's a very wealthy country. There is no excuse for the poverty and desperation except the elites are quite content with the corruption that gets them very very wealthy.
Most Mexicans are quite tied to their states and villages --- they're more land-tied than Americans in reality. They should be able to live in their own home-states, their own homelands --- what will stop the massive immigration is the badly needed reforms --- but those won't happen as long as the elites go on believing they can keep on the way they are and just send their unwanted to the USA to be supported by us.