Dole served more than three decades in Congress, was the Republican presidential nominee in 1996 and was an early supporter of President Trump, who attended the ceremony.
A spokesman for Bush says the former president, hospitalized on Saturday, has been admitted to the ICU with an acute respiratory problem. His wife has been admitted "as a precaution" after coughing.
With an early morning tweet, President-elect Donald Trump revives an issue that hasn't been front and center in American politics for more than a quarter-century.
The network will feature the massive festival, which boasts hundreds of authors and countless more attendees, in a live webcast. Across the Atlantic, The Hunger Games is getting a theater adaptation.