Kerry asks Bush to Break the Law

When Kerry demands Bush stop the Swift boat ads, Isn't he asking Bush to break the law?

MSNBC - Kerry calls on Bush to demand halt to attacks

Any formal ties between the Bush campaign and the veterans group would be against the law. Swift Boat Veterans for the Truth is organized as a non-party, independent political group under section 527 of the Internal Revenue Code, and coordination between a 527 group and a presidential campaign is illegal.

Or is it only illegal unless John Kerry says it is okay?