Can Americans still have a sensible and friendly political discussion across the partisan divide? The answer is yes, and we prove it every week. Julie Roginsky, a Democrat, and Mike DuHaime, a Republican, are consultants who have worked on opposite teams for their entire careers yet have remained friends. Here, they discuss the week’s events with editorial page editor Tom Moran. Q. Big week in politics. Rep. Andy Kim testified Monday in federal court in support of his claim that the “county line” gives First Lady Tammy Murphy an unfair advantage in the June Senate primary. If he wins that case…