South Korea’s Ambassador to France Mo Chul-min was questioned by investigators Thursday over allegations the presidential office created a “blacklist” of cultural figures considered critical of the conservative government. Mo, who served as senior presidential secretary for education and culture from 2013 to 2014, returned to South Korea on Wednesday, following a summons from the independent counsel team looking into a massive influence-peddling scandal that led to President Park Geun-hye’s impeachment.