Below is a video of presidential candidate Sen. Joe BidenJoe BidenRepublicans consider skipping witnesses in Trump impeachment trial Trump trade deal likely to sow division in Democratic presidential field Trump supporters at Pa. rally 'upset' after Democrats introduce impeachment articles MORE's (D-Del.) opening statement at the Senate Foreign Relations Committee hearing on Darfur Wednesday.

"It's been four years now since the crisis in Darfur erupted, four years since the genocide began. And it's been three years and nine months since congress formally recognized this as genocide," Biden said. "It's been three years and seven months since the administration added its own recognition."

"All these years later the question still remains," he added, "What are we going to do about it?"