Though it is 13 years old, the unsolicited letter from Trump, when he was a New York real estate developer and businessman, to then-Treasury Secretary John Snow sheds some light on Trump's attitudes toward big banks, which he has alternately lambasted and embraced since becoming a politician.
As recently as May, Trump said he was looking at breaking up big banks, echoing a campaign theme from 2016. But as president, Trump has also promised to roll back bank regulations, and he has hired Goldman Sachs veterans as close advisers.