Although I may disagree with this author's final conclusion, he explains how Glass-Steagal came to end- not all at once, but rather slowly eroded over time. It was already on its deathbed when Clinton performed the coup de grace.
http://www.ritholtz.com/blog/2012/05/how-we-ended-glass-steagall/
It's not like the Bush Admin was forced to set aside a lot of other regulatory clout they had in favor of self regulated banking, either. Ideologically, they were opposed to regulation on principle, so even when a less ideological admin might have taken a more conservative approach, they threw caution to the wind.
I mean, really. When the SEC revised the Net Capital rule in 2004 allowing investment banks to lever up to 30:1 & even 40:1, the presence of a dangerous bubble was already quite obvious, but ignored.
http://www.nytimes.com/2008/10/03/business/03sec.html?pagewanted=all&_r=0
Earlier, they used an obscure civil war statute to stymie state regulators, who had performed extremely important functions as part of the New Deal banking scheme-
http://whitenoiseinsanity.com/2009/...-sue-or-have-the-ability-to-stop-the-madness/
They demanded that the GSE's take on more "affordable" loans, then blamed the GSE's for the collapse they commanded-
http://www.washingtonpost.com/wp-dyn/content/article/2008/06/09/AR2008060902626.html
Acting as cheerleaders for the industry every inch of the way-
http://www.washingtonpost.com/wp-dyn/content/article/2008/11/22/AR2008112202213.html
Putting the blame on Clinton is more than disingenuous. He admits that he took the wrong advice wrt Glass-Steagal & unregulated derivatives, but Repubs have denied any culpability whatsoever. He may have unlocked the door, but it was Repubs who greeted & introduced the hordes of looters as old friends, worthy of our trust.
Repubs are still fighting to maintain "Freedom" for the financial sector, even though proposed reforms are actually quite mild.