Why Does the Washington Post Call the Trans-Pacific Partnership a "Free-Trade" Pact?

Is someone paying them to give their readers inaccurate information? I'm inclined to doubt that explanation, but why does the paper keep using this description when it is so obviously not true?

The issue came up in the context of a discussion of the agenda of the Democrats in the House of Representatives. The article notes differences between House Democrats and President Obama and trade, and then tells readers;

"Republican leaders are preparing legislation that would grant Obama broad author...