A bipartisan group of more than a dozen lawmakers on Wednesday introduced a bill banning members of Congress and senior staff from buying and selling stocks, most bonds and options contracts.

Called the Ban Conflicted Trading Act, the measure is intended to prevent lawmakers and high-level staffers from enriching themselves through trades based on potentially market-moving information.

Lawmakers and senior staffers are already banned from making investment decisions based on nonpublic data obtained through their positions by the STOCK Act, a law signed by former President Obama. The practice of insider trading is also illegal under several federal securities laws.

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The new measure, however, intends to hold lawmakers to tighter standards and prevent top congressional officials from making money off their positions even if the moves may not be considered insider trading.

Read more at The Hill.