After President-elect Donald Trump rang the opening bell at the New York Stock Exchange on Thursday morning, he spoke to CNBC's Jim Cramer from the trading floor about his plan for boosting the American economy.

Trump refrained from making any stock market predictions, telling Cramer a "dip … can always happen." The Republican also cheered cryptocurrency, saying, "we're gonna do something great with crypto."

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Cramer, who runs the members-only CNBC Investing Club, also spoke with Robert F. Kennedy Jr., Trump's pick to be the nation's top health official, about the growing popularity of weight loss drugs and vaccines.

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