Question

Which group believed the language of Article 10 of the Treaty of Versailles contradicted the power of Congress to declare war?
A. Irish Americans
B. “irreconcilables”
C. German Americans
D. “reservationists”

Answer 1

It was the "Reservationists" who believed the language of Article 10 of the Treaty of Versailles contradicted the power of Congress to declare war, since they found this to be hypocritical. 

Answer 2

Reservationists believed the language of Article 10 of the Treaty of Versailles contradicted the power of Congress to declare war