The President's News Conference
10/06/1931
https://www.presidency.ucsb.edu...
I think it is morally in effect.
I am happy personally to congratulate you on your achievement of flying around the world in the remarkable time of less than 9 days.
I shall appreciate it if you will extend my cordial congratulations and good wishes to the delegates from our own country, and abroad.
Their presence is another indication of the interdependence of the various countries in the world's business.