Real estate magnate and TV personality Donald Trump has yet to announce his presidential candidacy but said that if he becomes the next US president, he will be the "greatest representative of the Christians they've had in a long time."

In an interview with David Brody of CBN, Trump talked about immigration and Christianity and promised that America will be rich again.

When asked about his opinion about the deterioration of Christianity and religious freedom, Trump said Christians are "being treated horribly because we have nobody to represent the Christians."

"Believe me, if I run and I win, I will be the greatest representative of the Christians they've had in a long time," he said.

Trump, a Protestant, said that if a Christian lives in Syria, he can't come to the US.

"Yet, if you are a Muslim living in Syria, who are not under attack, they can come in. But we have Christians being beheaded all over the world by ISIS. In Syria and in Iraq, in particular, those Christians can't come into this country," he said.

He said there's a lack of respect for Christians.

"If you're a Muslim, you can come into the country very easy. If you're from Europe and you're a Muslim, you can come in. But if you are from Europe and you're a Christian you can't come in...meaning it's almost impossible," he said.

On immigration, Trump said he will build a fence at the southern border to prevent the entry of illegals and have Mexico pay for it.

"Now the southern border everybody comes in. You just walk by. So we are taking hundreds of thousands of people. Some good people and some rapists and some killers and drug lords and everyone else and they are flowing through the southern border. I would build a wall like nobody can build a wall. And nobody comes in illegally anymore," he said.

He said with his experience in real estate, "Nobody can build a fence like me."

"I build great buildings all over the world. I would have Mexico pay for it. Believe me. They will pay for it because they have really ripped this country off. They have really taken advantage of us both economically and at the border. They will pay for that fence," Trump said.

If he becomes president, he said, the US will become rich and great again.

"Nobody is going to mess with this country. We're going to become rich again and were going to become great again. I'm not going to cut social security like every other Republican. I'm not going to cut Medicare or Medicaid. Every other Republican is going to cut. Even if they wouldn't they don't know what to do because they don't know where the money is. I do. I do," he said.