Republican presidential candidate Donald Trump , who has for months rained withering ridicule on onetime party favorite Jeb Bush , on Sunday refused to take responsibility for the former Florida governor's exit from the 2016 White House race .
Trump had repeatedly made Bush the target of pointed attacks throughout his campaign for the Republican nomination to run in the November 2008 general election, labeling him "weak," "low-energy" and "an embarrassment" to the Bush political dynasty.
On Sunday, Trump denied any role he may have played in taking down Bush, who ended his campaign on Saturday night after a fourth-place finish in South Carolina.
Bush, the brother of one president and the son of another, had prided himself as the only candidate to attack Trump head-on throughout the campaign and frequently accused him of lacking ideas.