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Traffic at stores also declined following a security breach that may have exposed the credit card information of 40 million customers.

The bank also reported a $5 billion profit, despite a series of costly settlements with the U.S. government.

Despite the switch from the magnetic stripe credit cards to chip cards last October, the new technology is still not widely adopted. Visa unveiled an upgrade to speed up checkouts but barriers remain.

The Web is full of sites promoting views that many find offensive — and often, those sites do business with credit card companies. Some advocacy groups are pressuring Visa and MasterCard to end those relationships, but others worry these campaigns will have a chilling effect on free speech online.

In the U.S., at least 11 states forbid retailers from adding surcharges to credit card transactions. Several also allow discounts for customers paying via cash rather than plastic.

With credit card interest rates near modern highs, President Trump says he wants to cap the rates for one year.

Today is the deadline card issuers have given for merchants to be ready to accept the new, more secure, computer-chipped cards. But there's still a long way to go.

Upscale department store Neiman Marcus is the latest retailer to disclose data security breaches. The disclosure comes just a day after Target issued another apology for a data breach that occurred during the holiday season. NPR's Rachel Martin speaks with Brian Krebs, who broke both stories on his blog, KrebsOnSecurity.

The nation's biggest banks are leaning toward a new credit card security system that will rely on embedded chips and signatures rather than PINs. But critics say the PIN-and-chip system is superior.

The credit card would represent a foray into new businesses for both companies. With a card, Apple may be able to take a larger cut from purchases than it does now through Apple Pay.