Original sentence: In a September 10, 2007 column that was widely reprinted around the United States, he called for an end to the prison camp at Guantanamo Bay, Cuba, and for treating war prisoners openly under the 1949 Geneva Convention
Edited sentence: His opinion column typically displays a liberal political point of view; in a September 10, 2007 column that was widely reprinted around the United States, he called for an end to the prison camp at Guantanamo Bay, Cuba, and for treating war prisoners openly under the 1949 Geneva Convention