From: Rabbi Moshe Sofer
To: Rabbi Lipman
A student debates whether the Rambam holds there is Torah-level agency (shelichus) for a non-Jew. The Chasam Sofer rules that the Rambam does not recognize Torah-level agency for non-Jews; even his stringent ruling on interest collected through a gentile intermediary reflects only a rabbinic penalty.
Source: Shu"t Chasam Sofer OC §84