Below is a video of presidential candidate Sen. Joe BidenJoseph (Joe) Robinette BidenDemocrats will need to explain if they shut government down over illegal immigration Trump thinks he could easily beat Sanders in 2020 match-up: report Biden marks MLK Day: Americans are 'living through a battle for the soul of this nation' 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?"