The main problem with a general basic income is that it would be enormously wasteful, regressive and unfair. If you have a good economic situation, 250$/month is peanuts. If you are grasping for air, it won't be enough; even more so if it comes at the expense of getting rid of public programmes that can target concrete problems and leverage economies of scale.
Other approaches (e.g. minimum guaranteed income for the jobless and tax credits for the working poor) look like a far better use of resources.
