"When I started I went to 8 [percent in the polls] and they said, 'He plateaued.' Then the next week I went to 16 [percent], right?" Trump said during a campaign event in Waterloo, Iowa.

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"And they said, 'Oh, well, but that's a plateau.' Then I went to 20, to 24 [percent] — we had a poll today, I think it was 35 or 34 [percent], it's crazy," the celebrity businessman said.

"I want to plateau now, I'm satisfied," Trump added.

As at many of his highly publicized 2016 White House campaign events, Trump touched on a variety of foreign and domestic issues, promising to address them as president.

During his remarks on Syria, which were briefly interrupted by protesters, Trump suggested that thousands of refugees fleeing to the U.S. and other countries represented a "Trojan horse."

"I'm looking at all these men, we're going to bring them into our country — we know nothing about them. They're not documented, they can't give you papers. ... We know nothing," Trump said.

He also discussed border security to handle illegal immigration, emphasizing a major campaign issue that accompanied his initial surge in the polls to the top of the Republican presidential field.

Trump continues to lead in the Hawkeye State with 24 percent support, followed by retired neurosurgeon Ben Carson at 19 percent in the latest NBC News/Wall Street Journal/Marist polling.