Looking for Documentary Corroboration

A veteran member of Betar Cuba, Chananiah ben Chaim Nossen Gabrylewicz, has referred to an even for which I am looking for further documentation.

Here it is:-

a Symposium held in The Jewish Theological Seminar[y] of New York, circa 1936,37 or 38. My father carried a message from the Cuban Government allowing a possible One Million persons to enter Cuba in Exchange for $200.00 per family. As an observer at that time he was allowed to present the proposition and was told by unanimous decision of all present that: "Jews must defend the land where they reside as if it is their homeland."

A similar occurence, it seems, took place when the Saint Louis ship docked in Cuba.

He writes:-

Again my father carried a message to the JDC and the HIAS as well as other institutions that in exchange for money ( $250.00 perperson) they could be landed in Cuba. By the time the quibbling was noticed by the Cuban authorities the ship was ordered out. I witnessed the transfer of some of the people that had landed in Tiscornia, and also the forced reloading and departure as well as the woman that committed suicide.

Any documentary corroboration is appreciated.