From the Washington Post: Much of the $1.1 billion donated to charities to help the victims of Hurricane Katrina may be unavailable to assist those affected by Hurricane Rita because of legal limits on how the organizations can use the money. Rita is widely expected to cause significant damage along the Gulf Coast when it slams into the Texas shoreline late today or early tomorrow. But laws in most states requiring charities to honor donors' intentions will hamper the charities' ability to use money raised for Katrina victims to aid survivors of Rita, relief organizations and legal experts said yesterday.