%0 Journal Article %T When good is not good enough: A comparative analysis of underinclusiveness and the principle of coherence under proportionality review %A Hendrik M Wendland %J Maastricht Journal of European and Comparative Law %@ 2399-5548 %D 2018 %R 10.1177/1023263X18769500 %X Proportionality review has long been a tool of the ECJ to scrutinize national measures that impede the realization of the Internal Market. More recently, the ECJ has required those measures to be ¡®consistent and systematic¡¯. This paper shows the historical development of the ECJ¡¯s jurisprudence and contrasts it with the approach taken by US Courts reviewing similar issues. Under consideration of the comparative findings, different framings for arguments of underinclusiveness and coherence under a general concept of proportionality review are derived: the arguments can determine not only the efficacy or suitability of a measure, but also play a role when analyzing proportionality stricto sensu. On the other hand, it is argued that the sub-test of necessity is the wrong location for asserting those considerations. Most importantly, the ECJ ¨C limited by its institutional design ¨C uses the principle of coherence as a factor when interpreting the national law for its proper purpose %K Principle of coherence %K proportionality review %K underinclusiveness %K strict scrutiny %K pretext analysis %K Trump¡¯s ¡®Muslim ban¡¯ %U https://journals.sagepub.com/doi/full/10.1177/1023263X18769500