Families of those killed in the terror attacks on 9/11 are now legally allowed to sue Saudi Arabia, after Congress voted Wednesday to override President Barack Obama's veto of the legislation, the first override of his presidency. The votes by the House and Senate were overwhelming. Members of both parties broke into applause on the House floor after the vote. The bipartisan vote on the Hill was a rebuke of the President who had argued the Justice for State Sponsors of Terrorism Act (JASTA) - which for the first time would allow suits in American courts against state sponsors of terrorist attacks inside the US - could open the US government to lawsuits for the actions of military service members and diplomats. Obama also warned it could damage America's relationship with Saudi Arabia, a troubled but key Middle East ally, and other allies who might be accused of terrorism. But the powerful emotional appeal of providing 9/11 families a legal avenue to pursue justice proved too strong and carried the day. The victims of 9/11 have fought for 15 long years to make sure that those responsible for the senseless murder of thousands of innocent men, women and children, and injuries to thousands others, are held accountable. JASTA becoming law is a tremendous victory toward that effort," said Terry Strada, National Chair of the 9/11 Families & Survivors United for Justice Against Terrorism.