Mealey's (April 17, 2019, 11:40 AM EDT) -- MINNEAPOLIS — A Minnesota federal magistrate judge on April 12 denied plaintiffs’ motions to file amended complaints in a two class actions challenging UnitedHealth Group Inc.’s practice of cross-plan offsetting after determining that amending the complaints would cause undue delay and result in prejudice to UnitedHealth (Louis J. Peterson D.C., et al. v. UnitedHealth Group Inc., et al., Nos. 14-2101, 15-3064, D. Minn., 2019 U.S. Dist. LEXIS 63373)....