Former Vice President Dick Cheney and his wife, Lynne, will host a July fund-raiser for Mitt Romney at their home in Jackson Hole, Wyo., according to a save-the-date e-mail from the Romney campaign. The event will help the likely Republican nominee tap any donors to former President George W. Bush who remain on the sidelines, while fueling Democratic efforts to tie Mr. Romney to President Barack Obama‘s predecessor. The July 12 fund-raiser will be a tiered event, giving donors the chance to pay a little extra for the privilege of dining with Mr. Romney and the former vice president. The...