A cikin manufofin kasashen waje, Fillmore mafi muhimmanci nasara shi ne ya kaddamar da Perry Expedition bude cinikayya a Japan.
Tabbas, wani nau'i mai rikitarwa na jumla shine "A cikin manufofin kasashen waje, Fillmore ya goyi bayan tafiye-tafiyen Sojojin Ruwa na Amurka don bude kasuwanci a Japan, ya yi adawa da zane-zanen Faransa a Hawaii, kuma ya ji kunya ta hanyar tafiye-tafiyen filibuster na Narciso López zuwa Cuba. "