CW is not required. But it helps.
COMMISSION'S RULES · - Volunteer Examiners and Volunteer Examiner Coordinators; temporary identification; element credit; remote operation
When operating a US station by remote control from outside the country, what license is required of the control operator?
When transmitting, each amateur station must have a control operator. The control operator must be a person:
(a) For whom an amateur operator/primary station license grant appears on the ULS consolidated licensee database, or
(b) Who is authorized for alien reciprocal operation by § 97.107 of this part.