Trade and investment treaties like TTIP spark questions on the democratic quality of the formation as well as the substance of bi- and multilateral economic integration by law. This volume assembling contributions of a conference by the JuWissBlog in March 2015 is dedicated to historic and theoretical foundations of these questions as well as to specific legal problemsolving concerning participation and legitimacy in EU and International Investment law: Which limits does the jurisprudence of the ECJ pose on investor-state dispute settlement? How can particular "fair and equitable treatment" clauses be justified in face of democratic selfdetermination? Where lies participatory potential in regulatory cooperation and WTO law?