Barack Obama economic adviser Laura Tyson said at the Democratic National Convention on Monday that U.S. financial regulation needs modernizing, but hedged on how big a role to give the Federal Reserve.

Tyson, former chair of the Council of Economic Advisers in the Clinton administration, said she believes the Fed failed to crack down on subprime mortgage lending in recent years.

“What we have learned from the past two years … is that the old form of regulation is broken,” Tyson said.

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