(CNN) - Donald Trump may have made his fortune on real estate rather than politics, but the host of "The Apprentice" said Wednesday he was more knowledgeable about important issues than any of the journalists moderating presidential debates.
"I know a lot of the moderators and some are wonderful, and some aren't, but I know the issues better than the moderators," Trump said on CNN's "Piers Morgan Tonight."
Trump is currently slated to host a Republican presidential debate, sponsored by the conservative publication Newsmax, in late December. Three candidates have said they will not participate: Texas Rep. Ron Paul, former Utah Gov. Jon Huntsman, and former Massachusetts Gov. Mitt Romney.
Trump said he was disappointed Romney declined his invitation.
"I was disappointed that Mitt Romney, who's been up to see me at Trump Tower and called me, and, you know, we've had numerous calls, wants very much to have my endorsement," Trump said. "I was actually very disappointed that he didn't do the debate. I was actually surprised. He's a good guy, but I was actually surprised that he didn't do the debate."
Trump said the ratings on his reality show "The Apprentice" should have induced candidates to participate in his event.
"I get great ratings," Trump said. "Frankly, this debate, with the right people in it, would be very, very successful."
Speaking about Romney, Trump said: "If I were down in the polls, I'd want to do every debate I could."
Trump said he would publicly endorse a candidate in the coming weeks, and spoke highly of Huntsman and former House Speaker Newt Gingrich in the interview. Gingrich has agreed to participate in the Trump/Newsmax debate.