Here's the outline of the article:
I. CONSTITUTIONAL PRINCIPLES IN CONFLICT
II. THE APPROPRIATIONS POWER
A. Funding Treaties
B. By Treaty or Statute?
III. THE IMPEACHMENT POWER
A. Early Precedents
B. Contemporary Examples
IV. THE APPOINTMENT POWER
A. Kleindienst Nomination
B. Rehnquist for Chief Justice
C. Senate "Holds"
V. CONGRESSIONAL SUBPOENAS
A. Immunity
B. The Ashland Case
C. DOJ Opinion: Seizing Suspects Abroad
D. DOJ Documents: The Inslaw Affair
E. Whitewater Notes
F. Presidential Pardons
VI. THE CONTEMPT POWER
A. Actions from 1975 to 1981
B. James Watt
C. Gorsuch Contempt
D. Contempt Move Against Quinn
E. Contempt Action Against Reno
VII. HOUSE RESOLUTIONS OF INQUIRY
VIII. THE "SEVEN MEMBER RULE"
A. Origin of the Statute
B. The Waxman Request
C. District Court Decision
D. Request for Reconsideration
E. Briefs for the Ninth Circuit
IX. THE GAO INVESTIGATIONS
A. Statutory Authorities
B. Problems of Access
C. The GAO-Cheney Face-off
X. TESTIMONY BY WHITE HOUSE OFFICIALS
A. Watergate Precedents
B. Other Accommodations
C. Tom Ridge
CONCLUSION
FOOTNOTES
Take some time and a cuppa whatever and read, carefully. That way, once the requests for information start being rejected, you can follow the action.