Opinion ID: 884597
Heading Depth: 1
Heading Rank: 6

Heading: third issue

Text: ¶ 23 Did the District Court err in failing to dismiss Koehn's felony DUI charge as violative of the Due Process Clause? ¶ 24 Koehn also argues that the application of the prosecutor's January 1997 policy against investigating pre-1989 convictions to prospective offenders but not to those whose charges were already pending is violative of his right to due process of law. However, as the State points out, this argument was not presented by Koehn in his brief to the District Court in support of his motion to dismiss. Although Koehn's pleadings make the bald assertion that he has been denied due process of law, such an assertion is not sufficient to preserve an issue on appeal without a clearer articulation of the basis of the challenge, and unless plain error can be shown, a party may not advance a theory on appeal that was not sufficiently asserted before the trial court. State v. Greywater (1997), 282 Mont. 28, 35, 939 P.2d 975, 979; Shimsky v. Valley Credit Union (1984), 208 Mont. 186, 191, 676 P.2d 1308, 1310-11; Akhtar v. Van de Wetering (1982), 197 Mont. 205, 209, 642 P.2d 149, 152. We therefore decline to address this issue. ¶ 25 Affirmed. NELSON, GRAY, HUNT and REGNIER, JJ., concur.