With the 2016 presidential primary season gathering steam, candidates on both sides continue to debate a banking law passed in the middle of the Great Depression.

The Glass-Steagall Act, whose partial repeal in 1999 has been blamed by some for the financial crisis of 2008-09, had imposed a regulatory separation between traditional banking and higher-risk investing activities.

Democratic presidential front-runner Hillary Clinton says she would not reinstate the banking law but has instead laid out a multipronged plan to mitigate risk in the financial industry, including so-called shadow banking, which, she says, played a greater role in the crisis than the commercial banks covered by Glass-Steagall.

Clinton’s leading opponent for the Democratic nomination, Sen. Bernie Sanders of Vermont, would fully reinstate the law, and a 2015 bill to that end has the support of politicians from all corners of the political spectrum. Also among those in favor: two Republicans, former candidate and Arkansas Gov. Mike Huckabee and retired neurosurgeon Ben Carson.