The NCUA's capital proposal would require affected credit unions to hold $6.3 billion in additional capital to achieve current capital cushion.
Members surveyed also reported their average Target breach cost was $45,000.
Ceiling will automatically drop to 15% on March 10 without NCUA board action at Thursday's meeting.
House Financial Services spokesman said committee would examine data security, but would not answer specific questions about Target.
If the credit unions that generate the most cost to the share insurance fund are not going to hold more capital, why create new capital rules?
CUNA, NAFCU and NASCUS criticize proposal, which would require large credit unions to maintain a stress test capital ratio of at least 5%.
Trade group urges Congress to impose stricter rules, spread financial responsibility to retailers.
This Opinion piece lays out NAFCU's concerns about upcoming NCUA changes in risk-based capital rules.
Appeals may delay final implementation while credit union trade groups watch for fee, other impacts.
Each November, the NCUA puts forth its budget for the following year. Every year, NAFCU has steadfastly pressed NCUA to be vigilant in keeping every possible cost down.