if you think that migration is because that state has failed to take care of their people then what do you say about millions of NRIs who are living abroad. what is your definition of outsider? Also regarding delhi , it has created twin cities like gurgaon,farudabad,ghaziabad, noida to decongest the capital but what has mumbai done. we can go on arguments like this , i just wanted to make one point that just blaming people from other state does not help, there are so many cities in world where immigration happens in large scale but they have managed it - new york is one example.