United States v. Murphy

457 F. Supp. 2d 1228, 2006 U.S. Dist. LEXIS 64092, 2006 WL 2690072
Procedural entryThis page is a short order in United States v. Murphy. Read the opinion of the Court — 437 F. Supp. 2d 1184
District Court, D. Kansas·Decided September 7, 2006·No. 05-40040-01-SAC·Published

Opinion

MEMORANDUM AND ORDER

CROW, Senior District Judge.

This case comes before the court on the government’s motion to exclude the testimony of Mr. William Logan, defendant’s proffered expert witness. The government contends that Logan is biased toward the use and legalization of marijuana, that he is not qualified to testify on the subject matter of his proffered testimony, that his testimony is not scientifically reliable, and that his testimony is irrelevant to the issues before the jury and would be “highly prejudicial” pursuant to Rule 403.

General gatekeeper rule

The district court’s role in determining admissibility of scientific testimony under Fed.R.Evid. 702 is that of gatekeeper. E.g., Daubert v. Merrell Dow Pharmaceuticals, Inc., 509 U.S. 579, 113 S.Ct. 2786, 125 L.Ed.2d 469 (1993). Rule 702 sets the admission standard:

If scientific, technical, or other specialized knowledge will assist the trier of fact to understand the evidence or to determine a fact in issue, a witness qualified as an expert by knowledge, skill, experience, training, or education, may testify thereto in the form of an opinion or otherwise, if (1) the testimony is based upon sufficient facts or data, (2) the testimony is the product of reliable principles and methods, and (3) the witness has applied the principles and methods reliably to the facts of the case.

The proponent has the burden of establishing, by a preponderance of the evidence, that the pertinent admissibility requirements are met. See Fed.R.Evid. 104(a).

The court’s duty is to “ensure that any and all scientific testimony or evidence admitted is not only relevant, but reliable.” Daubert, 509 U.S. at 589, 113 S.Ct. 2786. The reliability of expert testimony turns on its status as scientific knowledge. Id. at 590, 113 S.Ct. 2786. The district court may determine that expert testimony is reliable by inquiring into the qualifications and background of the expert and asking if “the reasoning or methodology underlying the testimony is scientifically valid.” Bitler v. A.O. Smith Corp., 400 F.3d 1227, 1233 (10th Cir.2004) (quoting Daubert, 509 U.S. at 592-93, 113 S.Ct. 2786).

To fulfill its gatekeeping role, the court must conduct a two-part inquiry. First, the court asks whether the proffered testimony has “a reliable basis in the knowledge and experience” of the relevant discipline. Bitler, 400 F.3d at 1232-33. To make such a determination, a court should inquire into the qualifications and background of the expert and ask if “the reasoning or methodology underlying the testimony is scientifically valid.” Id. (quoting Daubert, 509 U.S. at 592-93, 113 S.Ct. 2786). “[A]ny step that renders the analysis unreliable ... renders the expert’s testimony inadmissible.” Mitchell v. Gencorp., Inc., 165 F.3d 778, 782 (10th Cir.1999). “The law grants the trial judge broad latitude to determine” what are “reasonable measures of reliability.” United States v. Allerheiligen, 221 F.3d *1231 1353, 2000 WL 1055487, **11-12 (10th Cir.2000), quoting Kumho Tire v. Carmichael, 526 U.S. 137, 137-38, 119 S.Ct. 1167, 143 L.Ed.2d 238. Second, the court must determine if the testimony is “relevant to the task at hand.” Bitler, 400 F.3d at 1234 (quoting Daubert, 509 U.S. at 597, 113 S.Ct. 2786).

A district court has some latitude in determining the procedures used to perform its gatekeeping function, United States v. Charley, 189 F.3d 1251, 1266 (10th Cir.1999), and is not required to hold a Daubert evidentiary hearing. See United States v. Call, 129 F.3d 1402, 1405 (10th Cir.1997). Here, the court has sufficient evidence to assess whether the expert testimony rests on a reliable foundation and is relevant to the task at hand, so will satisfy the gatekeeping function by ruling on this motion in limine. See Goebel v. Denver & Rio Grande Western R.R. Co., 215 F.3d 1083, 1087 (10th Cir.2000).

Bias

The government makes much of the fact that Logan is biased toward the legalization of marijuana and the defense of those accused of violating marijuana laws. Defendant does not dispute that Logan is biased, but contends that his advocacy should not disqualify him as an expert and that the bases for his opinions are independent of his advocacy work. Dk. 112, p. 3.

The court believes that Logan’s obvious bias toward those charged with marijuana offenses goes to the weight, not the admissibility of the testimony, and does not disqualify him from becoming an expert. See e.g., Scheidt v. Klein, 956 F.2d 963, 968 (10th Cir.1992). However, a “self-created advocacy role can be just cause for taking more care in determining [an expert’s] qualifications, the relevance and reliability of his opinions, and the factual foundation for his opinions.” United States v. Allerheiligen, 1998 WL 918841, *7 (D.Kan.1998).

Allerheiligen case

Logan, a criminal defense attorney, has previously been barred as an expert in a similar case in this district. In United States v. Allerheiligen, 1998 WL 918841, * 15 (D.Kan.1998), a defendant sought to call Logan to “testify to [the] defining elements which constitute personal use of marijuana” and “the expected yield of the marijuana seized.” Judge Saffels barred his testimony, finding too great a chasm between the subject matter of his proffered testimony and his expertise. Aller-heiligen, 1998 WL 918841 at * 15.

Logan’s testimony was found to lack valid indicators of reliability, as required under Daubert.

... the information provided to the court by defendant tells the court nothing about the scientific reliability of the opinions proffered by Logan and Carroll. There is no evidence that either man’s writings on marijuana have been recognized as a valid research effort or reference book in the field of botany. There is nothing of record that would lead this court to believe that it should rely on Logan’s former clients, members of the California criminal defense bar, California marijuana users or the readers of his articles as a valid indicator of reliability.

Allerheiligen, 1998 WL 918841 at *15.

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United States v. Murphy, 457 F. Supp. 2d 1228, 2006 U.S. Dist. LEXIS 64092, 2006 WL 2690072 (D. Kan. 2006).

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Related

Daubert v. Merrell Dow Pharmaceuticals, Inc.
509 U.S. 579 (Supreme Court, 1993)
Kumho Tire Co. v. Carmichael
526 U.S. 137 (Supreme Court, 1999)
Mitchell v. Gencorp Inc.
165 F.3d 778 (Tenth Circuit, 1999)
Goebel v. Denver & Rio Grande Western Railroad
215 F.3d 1083 (Tenth Circuit, 2000)
United States v. Justin Call
129 F.3d 1402 (Tenth Circuit, 1997)
United States v. Wayne Lewis Charley
189 F.3d 1251 (Tenth Circuit, 1999)
United States v. Kelley
6 F. Supp. 2d 1168 (D. Kansas, 1998)