Brian Steinberg Senior TV EditorFox News’ Chris Wallace, NBC News’ Kirsten Welker, and C-SPAN’s Steve Scully will each moderate one of three Presidential Debates leading up to the 2020 election, taking center stage in seminal events in the campaign to win the White House later this year.The non-profit Commission on Presidential Debates said Wednesday that the three debates would each be 90 minutes long, as would a separate vice-presidential debate moderated by Susan Page of USA Today.More to