Complex sentence: Presently he serves on the Board of the Society for Empirical Legal Studies, and was its co-President in 200-8-09, and is co-founder and a co-Network Director for the Political Science Network (PSN) at SSRN.com.
Split into simpler sentences: Presently he serves on the Board of the Society for Empirical Legal Studies, and was its co-President in 2008-09 and is co-founder. McCubbins is co-Network Director for the Political Science Network (PSN) at SSRN.com.