Georgia Democrat Hank Johnson said he would support an "oversight investigatory hearing to probe into that matter."
Massive hack could expose business services members at credit unions.
NAFCU renews call for congressional action while New York attorney general says probe is underway.
Alabama credit union claims retailer broke rules when it stored unprotected cardholder information.
Trade group urges Congress to impose stricter rules, spread financial responsibility to retailers.
Trade group to open website next week to allow credit unions to report expenses they incur from massive hack.
California, Missouri leagues cite need for legislative, technology measures while Golden 1 replaces 67,000 cards.
State's credit union network reports activity by phone calls, emails and in-person contacts.
Trade groups call for tighter security, while credit unions monitor and warn.
Roughly two years after initially losing, an appeals court breathed new life into 14 credit unions’ hopes to recover some of their losses from an enormous 2008 card data breach.