"Frank Lautenberg and I have had our differences through the years, but I've always respected him for his tenacity, devotion to the people of New Jersey and his love for and commitment to public service. I will always be grateful for his doggedness in fighting with me and the delegation to ensure congressional passage of an aid package after Hurricane Sandy that is delivering necessary assistance to our residents," said Christie.

In his remarks Friday, Lautenberg left a parting message to the young people in the room.

"This is a country where dreams are possible. You're looking at it," he said. "We see it all the time, and we have to continue to provide that incentive."