WASHINGTON (AP) - The rush to implement a tax credit for first-time homebuyers opened the program up to potential fraud by people who hadn't bought a home or already owned one, Congress was told Thursday.

J. Russell George, Treasury Inspector General for Tax Administration, questioned the eligibility of some 100,000 claims out of the 1.5 million who have sought to take advantage of the $8,000 tax credit incorporated in the economic stimulus package enacted last February.