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President Donald Trump on Friday signed the Republican tax bill into law, and he predicted that the American people will be pleased with how it improves both their paychecks and the U.S. economy.

"I don't think I'm going to have to travel too much to sell it," he said. "I think it's selling itself. It's becoming very popular."

On "Your World," pollster Frank Luntz pointed out that only 30 percent of Americans approve of the tax legislation, so it's going to take a lot of communication and education on the part of Republicans to sway public opinion.

He said the problem is that "people just don't know what's in the bill."

He said Republicans need to repeat again and again that this will lower taxes for the vast majority of Americans, and cutting corporate taxes will give a boost to the economy, job creation and innovation.

"We are so divided as a country, but the idea that American businesses and American workers are gonna get more out of this is something that every American wants," Luntz said.

He added that Republicans must emphasize that this is a tax cut for everybody, not just the rich.

"If you're a typical family of four making $55,000, you won't won't pay a dime, not a dime, in federal income tax," Luntz said. "If people know that, they know that the tax cut is good for them and they know the tax cut is good for America."

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