Rubio says he regrets getting personal with Donald Trump
WASHINGTON (Reuters) - Republican presidential candidate Marco Rubio voiced regret on Wednesday about making personal attacks against front-runner Donald Trump, a strategy that has failed to slow the New York billionaire's momentum.Rubio, Trump, Ohio Gover**r John Kasich and U.S. Senator Ted Cruz of Texas, the four remaining Republican presidential candidates, participated in a round of Fox News-sponsored town hall events a day before they meet for a**ther debate on Thursday in Miami.