This article by D.J. Logan puzzles me. The references he makes to Executive Order #10422 was made by Harry Truman in 1953 to enforce United Nations compliance to security checking the background of US employees at the UN.
http://www.presidency.ucsb.edu/ws/?pid=58850Harry S. Truman
Executive Order 10422—Prescribing Procedures for Making Available to the Secretary General of the United Nations Certain Information Concerning United States Citizens Employed or Being Considered for Employment on the Secretariat of the United Nations
January 9, 1953
3. The preliminary investigation conducted by the Civil Service Commission of any such person shall be made at all available pertinent sources of information and shall include reference to:
(a) Federal Bureau of Investigation files.
(b) Civil Service Commission files.
(c) Military and naval intelligence files as appropriate.
(d) The files of any other appropriate Government investigative or intelligence agency.
(e) The files of appropriate committees of the Congress.
(f) Local law-enforcement files at the place of residence and employment of the person, including municipal, county, and State law-enforcement files.
(g) Schools and colleges attended by the person.
(h) Former employers of the person.
(i) References given by the person.
(j) Any other appropriate source.
4. Whenever information revealed with respect to any such person is derogatory, within the standard set forth in Part II of this order, the United States Civil Service Commission shall forward the information to the Federal Bureau of Investigation, and the Bureau shall conduct a full field investigation of such person: Provided, that in all cases involving a United States citizen employed or being considered for employment on the internationally recruited staff of the United Nations, the investigation required by this Part shall be a full field investigation conducted by the Federal Bureau of Investigation.
PART III-OTHER INTERNATIONAL ORGANIZATIONS
The provisions of Parts I and II of this order shall be applicable to United States citizens who are employees of, or are being considered for employment by, other public international organizations of which the United States Government is a member, by arrangement between the executive head of the international organization concerned and the Secretary of State or other officer of the United States designated by the President.
Furthermore, the US Treasury was engaged during the Great Depression in hiring employees between 1933 and 1947 when hiring practices were modified, but seem to have nothing to do with the United Nations, and the order 91 was rescinded and then determined obsolete:
http://www.governmentattic.org/5docs/IRS1040_TreasTOs_1913-1952.pdfTreasury Order No. 91 made on August 29, 1947 by John W. Snyder Secretary of the Treasury, and revoked by TDO 113 on 4-22-49.
Treasury Order No. 91 was also Rescinded as Obsolete by General Counsel, Treasury Department, by listing dated 5/19/1961
There is no such IRS Service Agreement mentioned in US Treasury Order No. 91 as quoted in Logan's article:
"Pursuant to Treasury Delegation Order No. 91, the IRS entered a "Service Agreement" with the US Treasury Dept (See Public Law 94-564, Legislative History, pg.5967, Reorganization (BANKRUPTCY!!!)Plan No. 26) and the Agency for International Development."
Who is this man, D.G. Logan, and what are his resources for this article you posted?