Why government is so silent about illegal immigration from Bangladesh?

Like seriously why government is so silent about them and doing nothing , we Indians already have enough problem and they are creating more . Now a days more Bangladeshis openly criticizing indians and supporting china and pakistan ,no matter how much Indian government did for them in past and I am not even talking about 14 years kids in instagram but genuine adults. I have not much problem with bangladeshis living in Bangladesh , but the ones coming in India and still criticizing government , they mostly live in slum areas and somehow make fake document and then say government is doing nothing for them. Like seriously why aren't we bringing this issue in spot lite , they have captured all tourist areas (I live in tourist area and every day it boils my blood seeing these people). And later on these same people involve them selves in Terrorism .