Our country had a financial transaction tax for half a century, the report recounts, but it was repealed in 1965 even though it wasn't hindering growth. Reinstating such a tax would slow down the type of quick-trading speculation that caused the 2010 "flash crash" and it would have provided $22 billion in revenue per year since 2000, the report explains.
The report, released late last week, is here. Public Citizen's press release is here.