By David Morgan

WASHINGTON (Reuters) – The Democratic-led U.S. House of Representatives voted on Monday to override President Donald Trump’s veto of a $740 billion defense policy bill.

The 322-87 House vote, in which 109 Republicans joined Democrats to override Trump’s veto, leaves the bill’s fate to the Republican-led Senate, where a final vote is expected this week. If the Senate seconds the House action, the bill becomes law. It would be the first veto override of Trump’s presidency.

Trump said he blocked the legislation because he wanted it to overturn liability protections for social media companies unrelated to national security, and he opposed a provision to rename military bases named after generals who fought for the pro-slavery Confederacy during the Civil War.

Twenty Democrats, including the prominent progressive, Representative Alexandria Ocasio-Cortez, opposed the override.

Representative Mac Thornberry, the top Republican on the House Armed Services Committee, urged Republicans ahead of the vote not to side with the president.

“The world is watching what we do,” the Texas Republican said. “I would only ask that as members vote, they put the best interests of the country first. There is no other consideration that should matter.”

The legislation, which addresses a host of defense policy issues and includes a pay raise for U.S. troops, has been passed by Congress every year since 1961.

The bill had earlier passed both chambers of Congress with margins greater than the two-thirds majorities needed to override the president’s veto. But Trump vetoed it anyway and the bill went back to Congress for a possible override.

(Reporting by David Morgan; Editing by Alistair Bell and Aurora Ellis)