Univision struck back Friday at Republican presidential candidate Donald Trump's $500 million lawsuit claiming that it unjustly broke a contract to broadcast beauty pageants, citing his "disgraceful allegations" about Mexican immigrants. Univision lawyers filed papers in Manhattan federal court asking a judge to toss out the lawsuit Trump filed in July. The lawyers said Trump destroyed the value of Univision's rights to broadcast the Miss USA and Miss Universe pageants when he announced June 16 that he was running for president. ...