The United States Congress is holding a hearing on reaffirming support for the Good Friday Agreement.

Witnesses are testifying before a subcommittee of the House of Representatives Foreign Affairs Committee.

Opening proceedings, Democratic Congressman Bill Keating said he arranged today's virtual hearing in the wake of the recent unrest in Northern Ireland.

"After a period of relative stability and positive direction following years of peacebuilding efforts, this recent violence stopped many of us in our tracks, myself included," Congressman Keating said.

"I've called this hearing to reflect on and reaffirm the Good Friday Agreement and better understand the underlying tensions and the current situation on the ground," he added.

The virtual hearing will be addressed by the former US Special Envoy for Northern Ireland Mitchell Reiss, the former Chief Commissioner of the Northern Ireland Human Rights Commission Professor Monica McWilliams and the former Deputy Speaker of the Northern Ireland Assembly Jane Morrice.

In March, a resolution was introduced in the US Senate reaffirming support for the Good Friday Agreement.

The bipartisan motion called for the full implementation of the deal, as well as subsequent agreements including the Northern Ireland Protocol.

A similar resolution was passed in the US House of Representatives in December 2019.