Named after the two Democrat senators who sponsored it, Glass-Steagall prevented commercial banks – which take deposits from ordinary households and firms – from engaging in the high-risk speculative activities undertaken by investment banks.
Legislation in the US is not usually named after "two senators". Rather, after one Representative and one Senator: the names of those who sponsor the legislation in each House. Glass was a senator, Steagall athe representative.
Pendantry I know, but this is in a national newspaper after all.