Controversy remains about the precise connection between global imbalances and the global financial meltdown. Some commentators argue that external imbalances had little or nothing to do with the crisis, which instead was the result of financial regulatory failures and policy errors, mainly on the part of the . Others put forward various mechanisms through which global imbalances are claimed to have played a prime role in causing the financial collapse. Former . Treasury Secretary Henry Paulson argued, for example, that the high savings of China, oil exporters, and other surplus countries depressed global real interest rates, leading investors to scramble.