SIFMA provides comments to the Municipal Securities Rulemaking Board (MSRB) on a proposal to streamline new issue information submission requirements for underwriters under MSRB Rules G-32 and G-34, MSRB Notice 2012-19.  The proposal would streamline the submission of data by allowing underwriters to satisfy certain of their submission requirements under Rule G-32 in connection with new issues of municipal securities by their submission of data to the New Issue Information Dissemination Service (NIIDS) operated by the Depository Trust and Clearing Corporation (DTCC) pursuant to Rule G-34.  SIFMA shares its comments and concerns on selected parts of the proposal.