30 A.3d 127
D.C.2011Background
- Kenneth Aiken was convicted in 2001 of multiple offenses against Patricia Parker, following a CPO hearing in 2000.
- A Kastigar hearing was ordered to determine whether immunized testimony at the CPO hearing tainted the government’s trial evidence.
- The district court ruled that none of the government’s evidence was tainted by the immunized testimony.
- The DC Court of Appeals held that the government did not prove, by a preponderance, that no use was made of immunized testimony and that some uses were not harmless beyond a reasonable doubt.
- The court concluded that it was entitled to reverse Counts 6 (August 22 felony threat) and Counts 8 and 9 (two misdemeanor destruction of property).
- The overall decision affirmed most convictions but reversed three counts due to Kastigar-related taint.
Issues
| Issue | Plaintiff's Argument | Defendant's Argument | Held |
|---|---|---|---|
| Did the government prove independent sources for all evidence? | Aiken contends taint from immunized testimony occurred. | United States argues independent sources existed for trial evidence. | No; government failed to prove independent sources for some evidence. |
| Was the immunized testimony used in a way that was harmless beyond a reasonable doubt? | Even if tainted, use was harmless given strength of case. | Harmlessness cannot be assumed where taint may have affected significant testimony. | Partially; taint found not harmless for Counts 6, 8, 9, but harmless for others. |
| Did the prosecution’s handling of witnesses and investigations tainted Parker or Brox testimony indirectly? | Exposure to immunized testimony shaped witness questioning and credibility. | Prosecutor asserted safeguards; no indirect taint proven. | Government failed to prove no indirect taint; some influence shown. |
| Did Parker’s trial testimony respond to immunized testimony in a way that affected the outcome? | Parker’s later testimony added details and credibility prompted by immunized testimony. | Any added details were tangential and colateral to the charges; no impact on verdicts overall. | Some non-harmless impact found; Parker’s post-CPO testimony found to be influenced in part. |
Key Cases Cited
- Aiken v. United States (Aiken I), 956 A.2d 33 (D.C. 2008) (Kastigar burden for independent sources; heavy burden on government)
- United States v. North, 910 F.2d 843 (D.C. Cir. 1990) (independent-source requirement; burden on government)
- United States v. North, 920 F.2d 940 (D.C. Cir. 1990) (North II; taint and independence questions on witness testimony)
- Schmidgall v. United States, 25 F.3d 1523 (11th Cir. 1994) (taint analysis; need corroboration for independence of sources)
- Hampton v. United States, 775 F.2d 1479 (11th Cir. 1985) (documenting investigative chain to prove independent sources)