. I personally do not like borders. We have to learn from European Union. They all have open borders. And more and more countries are joining common borders and common economy and common politics. They even have now european parliament. Nepal had open border with Tibet until china took it. The borders should stay like this.Building 10 meter walls doesnot stop this problem. There are so many examples: North Korea and South Korea East and West Germany Tibet and Nepal Mexico and USA Israel and Palestine Burma and Thailand China Mainland and Hongkong ( Actually Nepalese Gurkhas are working as security police in this border within China) There are other form of controlling migration in Nepal like work permit. Registration obligatory. Surely it is not expensive like the other method with 15000 border patrol and 1400 Kilometers of Concrete wall. It is against the nature. I remember one Astronaut said " When I watch earth from the space I do not see borders, what I see is a one big blue planet earth."