Your point only stands if you assume that Americans and Koreans commit crime at the same rate, which is eminently false. The high rate of incarceration in the US is directly downstream of higher criminality compared to other advanced economies.
In fact, were Americans not constitutionally averse to stronger government, even more people would be locked up. People do stuff in America day after day that would not fly in Korea.
In fact, were Americans not constitutionally averse to stronger government, even more people would be locked up. People do stuff in America day after day that would not fly in Korea.