Ever wondered why the Congress stayed out of the Opposition’s open letter written on March 5 to PM Narendra Modi, alleging “blatant misuse of central agencies”, citing the CBI arrest of Delhi’s former deputy CM Manish Sisodia? The missive, believed to be the brainchild of Telangana CM K Chandrasekhar Rao was signed by AAP supremo Kejriwal, Punjab CM Bhagwant Mann, West Bengal CM Mamata Banerjee, Bihar deputy CM Tejashwi Yadav, Samajwadi Party chief Akhilesh Yadav, National Conference chief Farooq Abdullah, NCP supremo Sharad Pawar and Shiv Sena (UBT) head Uddhav Thackeray. While the Congress itself was sending out mixed signals on action against Sisodia, Delhi Congress leaders are happy that party chief Mallikarjun Kharge took a firm stand against AAP. Congress leaders feel now is the time to put AAP in its place and regain lost ground in the national capital. Besides, the letter made no reference to the National Herald case which had badly hit the Congress. Interestingly, most signatories seemed like affected parties — that is either they had been investigated or their kin have been under ED/CBI scanner. Congress sources said the party was in somewhat august company as JD(U) leader Nitish Kumar too did not sign. As for the Left parties, Kejriwal flaunted a letter from Kerala CM Pinarayi Vijayan expressing concern for Sisodia.