U.S. Rep. Bobby Scott has long complained about the gap between rich and poor in the United States.

"When measuring income inequality across the globe, after accounting for taxes and transfers, the United States ranks second worst in income inequality across developed countries," Scott, D-3rd, wrote in a June 12 statement .

Scott made the comment in explaining his vote against a sweeping trade agreement with Asian nations; he said thinks it would depress U.S. wages. The congressman has also cited income inequality in his calls to raise the minimum wage and increase taxes on the wealthy. We recently gave a Mostly True rating to his claim that U.S. income disparity is at it highest level since the 1920s.

This time, we wondered whether Scott is right about the United States’ global ranking.

DeMontre Boone, a legislative assistant to Scott, said the congressman drew his information from a December 2013 article by the Pew research Center headlined "Global Inequality: How the U.S. compares."

Pew defined developed countries as those belonging to the Organization for Economic Development and Cooperation, a group of 34 democratic nations seeking to improve trade.

The OECD calculates the inequality of income distribution in terms of what’s called a Gini coefficient that ranges on a scale from zero to one. Zero means there’s perfect equality and every household earns the same income. One means there’s absolute inequality and a single household earns a country’s entire income. All nations fall somewhere in between.

The Pew article, drawing mostly on 2010 calculations, has a chart placing the U.S. 10th highest among OECD nations in income inequality measured before taxes and transfers -- payments such as welfare and Social Security that a government makes to people without an exchange of goods or services. The U.S. Gini rating was .499, well behind the leader, Ireland, who came in at .591.

Scott, you’ll remember, focused his comments on earnings after tax and transfers. And when that bottom-line data was computed, the U.S. surged to No. 2 on the disparity chart, with a .38 Gini. Chile, with a .501 coefficient, had the greatest inequality.

So Scott cited information in the Pew chart correctly. But two issues still arise:

The OECD has updated its figures since the Pew article was published, and

Pew omitted three OECD nations from its chart -- Mexico, Turkey and Hungary -- because, unlike the other countries, their Gini figures were unavailable for 2009 or 2010.

So let’s look at this again, armed with data mostly from 2012 that includes all OECD nations. When it comes to income inequality before taxes and transfers, the U.S. ranked 7th. Here’s a list of those seven countries and the Gini coefficients:

Ireland, .582

Greece, .569

Portugal, .536

Chile, .532

United Kingdom, .523

France, .518

United States, .513

Now, let’s examine income equality after taxes and transfers -- the core of Scott’s claim. The U.S. rose to fourth in the rankings here, suggesting that the redistributive effects of our tax and public welfare systems are weaker than some of our trading partners. Here’s the top four list:

Chile, .503

Mexico, .457

Turkey, .402

United States, .390

Of course not all industrialized nations belong to the OECD. The trade organization also computed Russia’s income inequality for 2012 and the post-tax and transfers rating of .396 was higher than the United States’.

If you’re wondering, the five OECD countries with the lowest post-tax and transfers income disparity -- all with a Gini around .250 -- were Estonia, the Slovak Republic, Slovenia, Norway and Finland.

Our ruling

Scott said, "The United States ranks second worst in income inequality across developed countries," after accounting for taxes and transfers.

Scott bases his claim on an outdated chart listing the statistical disparity in 31 of the 34 OECD nations. Updated information with all the OECD nations shows the U.S. with the fourth highest disparity and it drops another notch if you include non-member Russia.

Clearly, the U.S. ranks near the top among developed nations in income inequality, but not quite as high as Scott says.

We rate his statement Mostly True.