Diffusion theory expects policy makers to come away from these meetings with knowledge concerning policy innovations in a variety of issue areas, which they will then be more likely to adopt in their home state. While intuitive, and providing the clearest path for policy learning amongst the various horizontal models of diffusion, national interaction diffusion is rarely examined due to the difficulty of collecting data.  We test this model of diffusion by analyzing whether items discussed at legislative conferences in 2010 are more likely to appear as legislation in following years. We approach this from two perspectives, 1) did the policy make it on the policy agenda (was it proposed, but not adopted); and 2) was the policy adopted? The results further our understanding of the early stages of the diffusion process by allowing an inside look at what legislators are learning from each other and whether they take that information and apply it to their own state.