“When top Republicans convened at the St. Regis resort in Aspen, Colo. last month for an exclusive donor retreat, several attendees said there was palpable tension in the room as the gathering’s two headliners prepared to speak: Vice President Mike Pence and former United Nations ambassador Nikki Haley,” Politico reports. “The assembled group of governors, high-dollar donors, and operatives were well aware that the two have big ambitions; to some it seemed as if Pence and Haley, who spoke on back-to-back days, were vying for their attention.