President Donald Trump on Thursday called Lou Holtz "one of the greatest coaches in American history" as he honoured the college football Hall of Famer and political ally with the nation's highest civilian honour. Holtz, whose 34-year coaching career included the 1988 national title at the University of Notre Dame, received the Presidential Medal of Freedom during an Oval Office ceremony. Holtz led six different programs to bowl games and is an outspoken Trump backer. "He's really a life teacher," said Trump, noting the respect and loyalty Holtz earned from the many players he mentored.