US President Donald Trump further cemented his grip over the Republican Party on Tuesday as his favoured candidate in a bitter Texas primary run-off, scandal-plagued Ken Paxton, trounced incumbent Senator John Cornyn. Paxton’s resounding victory, quickly called by Fox News and CNN after polls closed, underscored Trump’s continued power to make or break Republican political careers - even as lawmakers on Capitol Hill begin to rebel over the Iran war, his White House ballroom project and a...