Lawmakers are already bound by a 2012 law, the STOCK Act, that bans trading anchored in insider information and requires regular disclosures of transactions. But it’s regularly flouted, and the punishments it envisions are not that robust.

Calif., bans members of Congress and their spouses from trading and holding stocks. Pelosi, former Speaker of the House, has been criticized

The bill passed the committee with the support of every Democrat and only one Republican, its sponsor, who modified it to shield President Trump from a divestment requirement.