Sam Houston : George Wallace , who died Sunday at 93 , defined image of hard - charging reporter . He says Wallace did decades of investigative reporting over decades . Wallace exemplified the idea that people in power should be held accountable , he says . Houston : Wallace spoke openly of corporate interference in stories , and of his depression .
Brant Houston : Mike Wallace , who died Sunday at 93 , defined image of hard-charging reporter . He says Wallace reflected evolution of investigative reporting over decades . Wallace exemplified the attitude that people in power should be held accountable , he says . Houston : Wallace spoke openly of corporate interference in stories , and of his depression .