On Tuesday, President Donald Trump again repeated his claim that U.S. citizens pay an unfairly high tax burden. "We're the highest taxed nation in the world," he said, according to NPR White House reporter Scott Horsley. "People want to see massive tax cuts."

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In September, the President made the same assertion via Twitter in order to make the case for . "We are the highest taxed nation in the world — that will change," he wrote.

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At a rally in Youngstown, Ohio, this summer, Trump again said that, in America, "we have the highest taxes in the world."

In reality, the United States has average or below average taxes compared to similar economies.

The Pulitzer Prize-winning fact-checking site Politifact.com calls the president's assertion, which he has been making for a couple of years now, "one of his most repeated falsehoods."

Regardless of how you measure the tax burden, the president's claim is not borne out by the facts. As measured by percentage of GDP, numerous European countries that provide more social services tax their citizens more heavily than the U.S. does, the BBC reports: "In 2015, the U.S. tax take came in at 26.4 percent of GDP, well below countries such as Italy at 43.3 percent, France at 45.5 percent and Denmark at 46.6 percent."

You can see this reflected in a chart by the Committee for a Responsible Federal Budget in 2016, which uses slightly different numbers. By their calculations, Denmark comes in at over 50 percent. But the U.S. remains steady at 26 percent, significantly below the average of 34 percent.

As such, America is actually "among the lowest-taxed countries in the OECD." The OECD, the Organisation for Economic Co-operation and Development, has 35 member countries, including the most advanced nations in the world.