Jamie Dimon said Donald Trump's interest rate cap proposal would restrict Americans' access to credit.

JPMorgan Chase CEO Jamie Dimon on Wednesday advocated for a test of President Donald Trump's proposed credit card rate cap in Vermont and Massachusetts.

The episode may show the limits of President Trump's ability to cajole the financial industry into voluntarily giving up billions of dollars in revenue.

JPMorgan CEO Dimon said that Trump's push to cap rates at 10 percent would result in consumers losing access to credit.

Jamie Dimon said Donald Trump's interest rate cap proposal would restrict Americans' access to credit.

"Since there's a huge disagreement on this one ... I think we should test it," Dimon said of Trump's 10% credit card rate cap.