One of the attendees at these conferences speaks to the stickiness of some donor relationships.
Victor Pinchuk, a steel magnate whose father-in-law, Leonid Kuchma, was president of Ukraine from 1994 to 2005, has directed between $10 million and $25 million to the foundation. He has lent his private plane to the Clintons and traveled to Los Angeles in 2011 to attend Mr. Clinton’s star-studded 65th birthday celebration.
Between September 2011 and November 2012, Douglas E. Schoen, a former political consultant for Mr. Clinton, arranged about a dozen meetings with State Department officials on behalf of or with Mr. Pinchuk to discuss the continuing political crisis in Ukraine, according to reports Mr. Schoen filed as a registered lobbyist.
“I had breakfast with Pinchuk. He will see you at the Brookings lunch,” Melanne Verveer, a Ukrainian-American then working for the State Department, wrote in a June 2012 email to Mrs. Clinton.