President Donald Trump’s proposal for a one-year, 10% cap on credit card interest rates has struck a chord in debates about affordability — and set up a potential clash with Wall Street.

New York — Americans would save roughly $100 billion a year in interest costs if President Donald Trump’s campaign proposal to cap credit card interest rates at 10% were implemented, according to a paper published by Vanderbilt University on Thursday.

In a bipartisan move aimed at financial reform, Representatives Alexandria Ocasio-Cortez and Anna Paulina Luna have introduced legislation that would cap credit card interest rates at a maximum of 10 percent. The proposed cap is a stark reduction from ...