WASHINGTON -- The Municipal Securities Rulemaking Board approved a modified political contributions rule yesterday that strengthens some parts of its original proposal and tones down others.

"The revised Rule G-27 bans a dealer from transacting municipal securities business with an issuer within two years after any contribution to an official of such issuer made by that dealer, any dealer-controlled PAC or any municipal finance professional," the board announced at a press briefing late yesterday.

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