He was convicted under an article of the criminal code dealing with subversion. The court held that he had committed a crime “pursuant to the U.S. government’s hostile policy toward (the North), in a bid to impair the unity of its people after entering it as a tourist.” North Korea regularly accuses Washington and Seoul of sending spies. Ohio Gov. and Republican presidential hopeful John Kasich issued a statement Wednesday calling on North Korea to immediately release Warmbier and let him return to his family.Last year, a South Korean-Canadian pastor was arrested in the North and handed a life sentence for subversion. Another two Americans are currently detained in the country.