Former NFL sideline reporter Michele Tafoya launched her campaign for the U.S. Senate on Wednesday, hoping to win the Republican nomination for the Minnesota seat being vacated by retiring Democratic Sen. Tina Smith. "For years, I covered the biggest football games in America," Tafoya said in a video posted on social media, in which she stands on a snowy football field. "I walked the sidelines when the pressure was mounting and the stakes were the highest. That job taught me about more than football. It taught me about how leadership really works. When leaders are prepared and accountable, teams succeed. When they aren't, people pay the price."...