The Opposition Congress has demanded foreign minister Sushma Swaraj's resignation for conveying India's no-objection to the UK for the grant of the documents to Lalit Modi, accusing the minister of misusing authority for a man under the Enforcement Directorate's (ED) Scanner. "It is not morally or constitutionally right for Sushma Swaraj to continue in office. She should resign immediately," Congress Spokesperson Randeep Singh Surjewala said.