Published Wednesday, 26 August 2009
The Ballymena born actor said he was still a proud Irishman but the warmth from well wishers on the other side of the Atlantic prompted him to seek citizenship.
Neeson's wife, actress Natasha Richardson, died in March following a skiing accident in Quebec, Canada.
Appearing on ABC's Good Morning America, Liam Neeson said he and the couple's two sons were "doing good" five months on from the tragic accident.
"To be honest, we are taking each day as it comes," he added.
The 57-year-old actor said he was still getting extraordinary letters of condolences from people in America.
"That is partly the reason why I've recently become an American citizen," Neeson said.
"I'm still a proud Irishman, of course, but I've become an American citizen - I 'm very proud of that."