Who spent more bending the ears of Washington-types during the first half of 2007, Clear Channel or the National Association of Broadcasters? We are happy, we guess, to report that the big winner was NAB, as well it should be since that is a major part of its job. According to reports, Clear Channel dropped 1.2M working various DC lobbies, while the NAB dropped 4.3M. Both were working to head off the establishment of a performance tax. NAB also spent quite a bit trying to head off the XM/Sirius merger, among other things. Clear Channel had some tax issues it was trying to work on.