Washington Mutual Inc. is charging that a government proposal to tighten thrift ownership rules would impede the Seattle-based banking company from making future acquisitions.

"If the proposal were adopted, the resulting restrictions on growth by acquisition could cripple thrift holding companies in today's highly competitive financial services marketplace," Washington Mutual chairman Kerry K. Killinger warned in a letter to the Office of Thrift Supervision.

Subscribe Now

Access to authoritative analysis and perspective and our data-driven report series.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.