A former senior Peace Corps official agreed to cooperate with any law enforcement investigations surrounding a scheme that funneled millions of Department of State dollars to a nonprofit founded and run by former Secretary of State John Kerry’s daughter, recently published court documents show. Warren “Buck” Buckingham agreed to cooperate as a condition of an agreement with the Washington, D.C., U.S. Attorney’s Office that would keep him from facing prosecution for a related illegal lobbying charge, court documents filed Thursday and made public Tuesday show. (RELATED: Former Peace Corps Official Who Steered Contracts To John Kerry’s Daughter May Avoid Prosecution)...