Donald Trump has some surprising allies in his war on credit card rates

Sarah Meyssonnier via Pool; Alex Brandon/AP Images; Alyssa Powell/BI

Sky-high credit-card interest rates are not popular. The idea of capping them, however, is popular — which is why politicians on both sides of the aisle are talking about limiting just how high credit-card companies can drive their rates. The issue is making for some perhaps unexpected bedfellows, a potential team-up you wouldn't expect. Such a cap would be a very big deal, shaking up the industry and Americans' access to credit. But just because both sides have hopped onto the idea doesn't mean it will actually happen. That will come down to whether everyone's actually serious about it, and there are reasons to have some doubts.