It was part of the Obama administration's banking reforms, if I remember correctly. It outlawed credit-card issuers' prohibition on giving cash discounts.

It also included a number of other valuable consumer protections, such as forcing card issuers to provide clear advance notice of interest-rate increases.

The financial-system reforms were some of the Obama administration's most valuable.

Imagine having a president who cares about unsexy policy wonk issues that make a huge difference to everyone. Feels like a distant memory these days.