From: Rabbi Moshe Sofer
To: Rabbi Tzvi Hersh Lehren
Emissaries from Jerusalem sought European donations to build an additional synagogue, but Rabbi Tzvi Hersh Lehren blocked their collection to protect existing life-sustaining charity for Eretz Yisrael's poor. The Chasam Sofer rules in Lehren's favor.
Source: Shu"t Chasam Sofer OC §203