Right, every migrant wants to avail the free travel offer, instead of staying back. This can be double whammy, migrant state will loose workers and there will not be any activity for next 1-2 year and more tension will be for receiving home states, whether they are able to handle all of sudden such crowd, with free food, shelter, etc. Not to forgot, it is because of home states inefficiency to bring industries or create jobs, many people are wandering state to state for jobs and become migrant.