House of Cards' Underwood gets the presidential treatment

The National Portrait Gallery in Washington has the world's largest museum collection of paintings of US presidents.

But visitors may be surprised to find an imposter gracing the walls - Frank Underwood, the fictitious 46th president from the TV show, House of Cards.

Played by Kevin Spacey, the portrait of Underwood raises questions about how much popular culture permeates politics - something many of us have been asking in this presidential season.

Jane O'Brien went to the unveiling.

Edited by Bill McKenna, Filmed by Markus Zeffler