Scoop: THIS WEEK WITH DAVID GREGORY on ABC - Today, January 20, 2013

HEADLINER:
David Plouffe, White House senior advisor

SPECIAL GUEST:
Eva Longoria, co-chair, Presidential Inauguration Committee; executive producer, Latino Inaugural 2013

POWERHOUSE ROUNDTABLE:
George Will, ABC News
Cokie Roberts, ABC News
Matthew Dowd, ABC News political analyst; political strategist
Jennifer Granholm, host, Current TV's "The War Room"; D - former Michigan Governor
Rick Santorum, R - former Pennsylvania Senator; 2012 Republican Presidential candidate; chair, Patriot Voices

As President Obama counts down to his second inauguration, White House senior advisor David Plouffe speaks to George Stephanopoulos, Sunday on "This Week." With the president set to take his second term oath of office this weekend, a host of challenges lie ahead for the country, from looming budget battles to the reignited gun control debate. Can the White House and Congress finally come together to tackle major problems, or is Washington headed for more stalemate? What major issues will shape President Obama's second term and define his legacy?

Then the powerhouse roundtable debates President Obama's second term challenges, with ABC News' George Will and Cokie Roberts; political strategist and ABC News political analyst Matthew Dowd; former Michigan Governor Jennifer Granholm, host of Current TV's "The War Room," and 2012 Republican Presidential candidate Rick Santorum, chair of Patriot Voices.

Plus, as Washington prepares for a party, George Stephanopoulos speaks with actress and Presidential Inauguration Committee co-chair Eva Longoria about the weekend's inaugural celebrations.

See the whole political picture, Sunday on "This Week with George Stephanopoulos."