Generally revise the laws regarding claims requiring expert witness testimony

HB 548 proposes new requirements for admitting expert witness testimony in Montana courts. The bill mandates that courts consider four specific factors before allowing an expert witness to testify under Rule 702 of the Montana Rules of Evidence. These factors include whether the expert's knowledge will help the court, if the testimony is based on sufficient facts, if reliable principles and methods were used, and if those methods were reliably applied to the case. This directly affects how expert testimony is evaluated and admitted in legal proceedings, impacting attorneys, expert witnesses, and litigants.