While Japan's peers in Europe and elsewhere have voiced alarm over U.S. President Donald Trump's executive order limiting immigration and refugees, Tokyo has remained nearly silent.

Prime Minister Shinzo Abe has eschewed any criticism of Friday's order, which barred nationals of seven Muslim-majority countries from entering the United States for 90 days, halted the U.S. refugee program for 120 days and suspended indefinitely the intake of refugees from war-torn Syria.

Abe has said he is "not in a position to comment" on the move.