Glass-Steagall Returns?

On-topic for people invested in affected banks:…
“Senate to Re-Introduce Glass-Steagall Bill”

I almost missed this news. I think Glass-Steagall was repealed during the Clinton administration, after a long career of putting a firewall between “boring” banking and “risky” investment banking.

Would it have prevented - or at least mitigated - the dot-com crash and the housing crash? Since it was repealed in 1999, it may not have made much difference with the dot-coms.