The issue focused on his position on tax policy, with some saying that he was more open to free trade than other Republican presidential candidates.

"I know I am not the only one who has been asked this question and it is an important one for me," Trump said. "It's a very hard thing to get your head around. It's like most things. But you have to look at it. And as far as what he would do in terms of economic policy, I don't want to play