WASHINGTON (Reuters) - The U.S. House of Representatives passed legislation on Friday that would allow the families of victims of the Sept. 11 attacks to sue Saudi Arabia’s government for damages, despite the White House’s threat to veto the measure.

The U.S. Senate in May unanimously passed the “Justice Against Sponsors of Terrorism Act,” known as JASTA. The bill’s passage in the House by voice vote, two days before the 15th anniversary of the attacks that killed about 3,000 people, was greeted with cheers and applause in the chamber.

“We can no longer allow those who injure and kill Americans to hide behind legal loopholes, denying justice to the victims of terrorism,” said Republican Representative Bob Goodlatte, the chairman of the House Judiciary Committee.

Fifteen of the 19 Sept. 11 hijackers who crashed airliners in New York, outside Washington and in Pennsylvania were Saudi nationals. The Saudi government, which strongly denies responsibility, has lobbied against the bill.

Opponents of the measure said it could strain relations with Saudi Arabia and lead to retaliatory laws that would allow foreign nationals to sue Americans for alleged involvement in terrorist attacks.

The White House on Friday reiterated that President Barack Obama would veto the bill.

But some members of Congress have become increasingly restive about relations with Saudi Arabia, long an important player in U.S. Middle East policy. On Thursday, four senators introduced a resolution seeking to block a $1.15 billion arms sale to the kingdom, after 64 House members signed a letter in August asking Obama to delay the sale.

If Obama carries out the veto threat and the required two-thirds of both the Republican-majority House and Senate still support the bill, it would be the first time since Obama’s presidency began in 2009 that Congress had overridden a veto.

The House passed the measure by voice vote, without objections or recorded individual votes. That could make it easier for Obama’s fellow Democrats to uphold his veto later without officially changing their positions.

SOVEREIGN IMMUNITY

JASTA would remove sovereign immunity, preventing lawsuits against governments, for countries found to be involved in terrorist attacks on U.S. soil. It also would allow survivors, and relatives of those killed in them to seek damages from other countries.

In this case, it would allow suits to proceed in federal court in New York as lawyers try to prove that the Saudis were involved in the attacks on the World Trade Center and Pentagon.

Backers say passage is long overdue. They argue that if Saudi Arabia, or any other government, is innocent of involvement in attacks, they have nothing to fear from the legislation.

FILE PHOTO - A firefighter walks amid rubble near the base of the destroyed World Trade Center in New York on September 11, 2001. REUTERS/Peter Morgan

“If they’ve done nothing wrong, they have nothing to worry about,” said Democratic Senator Chuck Schumer of New York, a vocal advocate for the measure.

Previous versions of the bill had stalled in Congress because they provided fewer protections for countries against lawsuits.

Lawmakers had been under intense pressure from the Sept. 11 families to pass JASTA before the 15th anniversary of the attacks on Sunday.

A member of the French parliament, Pierre Lellouche, said he would consider retaliatory legislation in France, and would anticipate it elsewhere, if the final version of JASTA does not include waivers for countries that are U.S. allies and actively involved in fighting terrorism.

“It may trigger similar acts all over the place, and then you enter into a ‘state of jungle’ where everybody sues everybody,” Lellouche, who runs a parliamentary committee on international law, told reporters on a conference call on Friday.