According to a report in the German daily Süddeutsche Zeitung, many EU officials were appalled by how little the Americans appeared to know about trade policy. The guests from Washington seemed not to be aware that EU member states only negotiate trade treaties as a bloc. According to the paper, Trump’s chief economic advisor, Gary Cohn, claimed during meetings, for example, that different customs tariffs are in place between the U.S. and Germany than between the U.S. and Belgium.

Source: Trump in Brussels: ‘The Germans Are Bad, Very Bad’ – SPIEGEL ONLINE