 Kerala's proposal for decommissioning the dam and constructing a new one has been challenged by Tamil Nadu.Tamil Nadu argues that building a new dam is for gaining unfair tax revenues from developing states, which is a qua within India, to the detriment of the revenue producing states, i.e., a form of wealth distribution.It is a microcosm of the bigger problem that India faces with China, which is building dams on Brahmaputra.