The paper discusses the pros and cons of a Transatlantic free trade area (TAFTA) against the concept of an informal trade-facilitating marketplace between Europe and the US. It finds considerably more cons expecially since TAFTA would be expected to have ever more discriminatory effects to the detriment of dynamic non-member economies mainly in Asia but also in food-exporting regions. Efficiency-enhancing effects are argued to be achievable under a marketplace concept which does not separate insiders from outsiders. It is also shown that in foreign direct investment (FDI) and FDI-related service trade TAFTA seems redundant as in recent years bilateral capital and trade flows have proven to be buoyant without preferential treatment.