Japan and South Korea tend to favor large infrastructure projects, so this project might seem to be fairly obvious politically, but this project has been the target of far right/nationalist political groups in both countries. Many South Koreans have advised caution in proceeding with the project due to worries of firms in the much larger Japanese economy becoming more dominant in South Korea due to the lower logistical expenses the tunnel would provide; this increased economic power would further expand the political power of Japan in the region.[1] Similarly, many Japanese firms worry it may expand the increasing dominance of Korean firms in sectors such as consumer electronics.