NEW YORK - Republican presidential candidate Donald Trump sparked widespread controversy Wednesday after the New York businessman failed to publicly offend a minority group. Trump, who is currently leading national polls among GOP candidates, has remained a dominant figure in U.S. media coverage following remarks he has made about Mexicans, women, and members of the Muslim faith. However, at a campaign event in Iowa earlier today, Trump controversially limited his half-hour speech to the topic of tax cuts - angering supporters who were hoping to hear him elaborate on plans to deport Syrian refugees.