New Delhi, Jan. 18 -- The Supreme Court on Monday said states have a constitutional duty to rehabilitate children living on streets after it found efforts lacking on the part of states and union territories to identify and rehabilitate children forced to beg for a living. A bench of justices L Nageswara Rao and BV Nagarathna said, "These are marginalized sections of the society. You (states) have a constitutional duty, take it seriously. If states do not act promptly how will relief reach to these children? The immediate needs of these children cannot wait any further."...