Sen. Johnson signed on to Senator Clinton's February 8, 2008 letter to President Bush. The letter encourages the President to increase the U.S. diplomatic effort on Darfur.

Sen. Johnson used his position as a member of the Senate Appropriations Committee to secure additional funding for Sudan.

He supported an amendment to the recent Fiscal Year 2006 Supplemental Appropriations bill that provided an additional $50 million in funding for peacekeeping operations in Darfur. The Senate Appropriations committee adopted the amendment.

Sen. Johnson joined a number of his colleagues in contacting administration officials and Congressional members about the genocide in Darfur.

In January 2006 he co-signed letter asking President Bush to “develop options for deploying additional international peacekeepers, sustain pressure on the Government of Sudan, and ensure adequate funding of the peacekeeping mission in Darfur.”

In May 2006 Sen. Johnson contacted the Chairman and Ranking member of the Appropriations Committee, urging them to “maintain the peacekeeping and humanitarian assistance for the Darfur region of Sudan that was approved by both houses of Congress” during consideration of the FY06 Supplemental Appropriations bill.

In May 2006 he co-signed a letter to Sec. Rice, pledging support for a sustainable peace in Darfur. The letter encouraged Sec. Rice to speak out on justice in Darfur; the role of women in the Abuja agreement; provide additional humanitarian assistance to Darfur; and appoint a special envoy to the region.

In May 2006 Sen. Johnson submitted a Congressional record statement expressing his concern about relief efforts and lack of food assistance in Darfur.