Belfast's senior police commander, Assistant Chief Constable Duncan McCausland, said both the marchers and those opposed to the parade had been "constructive and positive in their approach".

BBC: NEWS | UK | Northern Ireland | Parade passes off peacefully

The panel was moderated by former Congressman Fred Grandy and featured Sam Nunberg of the Middle East Forum, Brooke Goldstein of the Lawfare Project and Andrew McCarthy, former Chief Assistant U.S. Attorney and Senior Fellow at the National Review Institute.

CENTERFORSECURITYPOLICY: 2012 Mightier Pen Award: Roger Ailes

The Black List features senior administrators such as Millwall's executive deputy chairman Heather Rabbatts, assistant chief executive of the PFA Bobby Barnes and Jason Rockett at Sheffield United - the only black chief executive in professional football.

BBC: SPORT | Football | The footballing Black List

The two former senior officers who want the audit office investigation are Alan McQuillan, a former assistant chief constable who retired in 2003 and Norman Baxter, who was one of the PSNI's most senior detectives when he retired in 2008.

BBC: Northern Ireland

Also participating at the White House will be Chief of Staff Jack Lew, Assistant to the President for Homeland Security John Brennan, Deputy Chief of Staff Alyssa Mastromonaco, Deputy Assistant to the President for Homeland Security Richard Reed, and other senior members of the President's team.

WHITEHOUSE: The White House