Zach Lahn’s win in Iowa is a rare rebuke to Trump, who still has an iron grip on the party

While president’s last-minute endorsement of Randy Feenstra failed, he has enjoyed successes in Texas, Indiana and KentuckyUS politics live – latest updatesZach Lahn’s victory in Iowa’s gubernatorial primary on Tuesday is a rare instance of Republican voters rejecting Donald Trump, who has used his endorsement to elevate proteges and oust rivals nationwide…