United Airlines CEO Scott Kirby is calling for a national wealth tax and inheritance taxes approaching 100% for certain estates, arguing that growing wealth inequality poses a threat to American society.Kirby made the remarks when asked about declining public trust in corporate executives during an interview with The New York Times published Sunday."Wealth inequality has become a danger to our society, and we need to address that," Kirby told the outlet in an interview published Sunday.The airline executive argued that a wealth tax would need to be implemented nationwide rather than at the sta...