 Klausner did whatever he felt was necessary to get the Jewish DPs what they needed including setting up Jewish hospitals and procuring clothes, food and medical supplies and, while he did a great deal of good, his actions often put him at odds with the army, the Red Cross, the United Nations Relief and Rehabilitation Administration, and various Jewish organizations.His relations with the American Jewish Joint Distribution Committee (JDC) were particularly fraught, with the JDC successfully removing him from Germany, although he soon returned, this time to Kassel, Germany.When Earl G. Harrison, dean of the University of Pennsylvania Law School and U.S. representative to the Intergovernmental Committee on Refugees, arrived in Germany in July 1945 to investigate conditions in the DP camps—on an assignment from Acting Secretary of State Joseph Grew and, through Grew's efforts, carrying a letter of interest and support from President Truman—Klausner met with him in Dachau, and served as his guide in visits to the camps at Landsberg, Feldafing, St. Ottilien, and elsewhere, making sure that Harrison became acquainted with representatives of the Jewish DPs, and observed first-hand the actual conditions.