Kirk joined Arizona Senator John McCain, South Carolina's Lindsey Graham and Florida's Marco Rubio in Tripoli. The senators talked to Libyan leaders about the need for justice in the 1988 Lockerbie Airliner bombing. Libya was implicated in the bombing over Lockerbie, Scotland that killed 270 people, many of them Americans.
The senators are part of the highest-ranking American delegation to travel to Tripoli since Moammar Gadhafi was ousted last month. Kirk points out Libya plays a big role in the global economy.
"As Libya becomes a regular state, a non terrorist supporting state, and an enormous oil producer, I think this does have a visible impact on the United States as oil markets see Libya coming online. It will put downward pressure on the price of gasoline around the world," Kirk said.
Gadhafi's whereabouts is unknown, but the new leaders say he is hiding in the southern desert of Libya.
