The document discusses the financial transaction tax (FTT), which proposes taxing financial trades to raise revenue and mitigate high-frequency trading practices that contribute to market instability. Various proposals, including those by Bernie Sanders and Peter DeFazio, advocate for rates ranging from 0.03% to 0.5%, asserting potential multi-billion dollar revenue generation. Historical context shows that the U.S. had a financial transaction tax from 1914 to 1965, which was repealed not due to economic harm but as part of broader tax reforms.