At the time, the Lansing–Ishii Agreement was touted as evidence that Japan and the United States had laid to rest their increasingly acrimonious rivalry over China, and the Agreement was hailed as a landmark in Japan–United States relations.
Datiden opfattede Lansing-Ishii-aftalen således, at Japan og USA havde bilagt deres tidligere indbyrdes voksende uenighed og kamp om Kina, og aftalen blev hilst som en milepæl i de japansk-amerikanske forbindelser.