Kuhn and a few other "Bundmen" traveled to Berlin to attend the 1936 Summer Olympics. During the trip, he visited the Reich Chancellery, where his picture was taken with Hitler. This act did not constitute an official Nazi approval for Kuhn's organization: German Ambassador to the United States Hans-Heinrich Dieckhoff expressed his disapproval and concern over the group to Berlin, causing distrust between the Bund and the Nazi regime. The organization received no financial or verbal support from Germany. In response to the outrage of Jewish war veterans, Congress in 1938 passed the Foreign Agents Registration Act requiring foreign agents to register with the State Department. On March 1, 1938, the Nazi government decreed that no "Reichsdeutsche" nationals could be a member of the Bund, and that no Nazi emblems were to be used by the organization. This was done both to appease the U.S. and to distance Germany from the Bund, which was increasingly a cause of embarrassment with its rhetoric and actions.