A new ad for Wyoming Republican Rep. Liz Cheney features former Republican Sen. Alan Simpson, a political icon in the state, backing Cheney's re-election. But in an interview with NBC News about the ad, the Wyoming political giant minced few words about his frustration with former President Donald Trump, who is backing a primary challenge against Cheney over her repeated criticism of the former president. In the ad, Simpson joins a handful of others — including prominent Wyoming politicians — with a simple message: "Join me in voting for Liz Cheney on August 16th," Simpsons says, while the screen simply...