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We discuss the problem of localization of 4D massless states inRandall-Sundrum 2 (one-brane) models. A Randall-Sundrum 2 construction startingfrom N=8 gauged supergravity in 5D Anti de Sitter space gives rise to an N=4supergravity-matter system. We explicitly show that only the modes of the N=4graviton supermultiplet localize on the 4D brane, streamlining and generalizingprevious works. We also point out that while charged 1/4 BPS black holes doexist in the 4D theory, they are always produced in sets of total charge zero.This zero-charge configuration uplifts to a 5D metric without nakedsingularities, thus avoiding the curvature singularity of the 5D uplift of anisolated charged BPS black hole. Finally, we resolve a puzzle with localizationof massless high spin fields on a (putative) Randall-Sundrum 2 constructionbased on Vasiliev's high spin theories. We show that while high spin fields dolocalize, the gauge symmetry that ensures decoupling of their unphysicalpolarizations is anomalous. This implies that the high spin fields must acquirea mass.

4D Localization in Randall-Sundrum 2 Supergravity and in Vasiliev Theories