Rallies have been mainstay of president’s brand but even some in his own party fear voters are sick of the sight of him“Get your asses in that car.” That was Donald Trump’s order, he later recalled, to his motorcade after foul weather grounded Air Force One in Texas on Thursday. The 85-mile dash to Oklahoma at nearly 100mph was proof that nothing can keep Trump from a Trump rally.Which might not be the good news for Republicans it once was. As the US president embarked on a 32-day campaign blitz