The bill now moves to the House

The Senate has the two-thirds majority needed to override the President. The bill now moves back to the House, where it will need the same margin.

That vote could take place later this week. If it does, the families of 9/11, for instance, will be able to sue the government of Saudi Arabia.

Down the line that could open a can of worms because US judges tend to give out crazy judgements and those judgements will be challenging to enforce. That's not to mention the possibility of retaliation.

Saudi Arabia's government threatened to dump $750 billion in Treasuries and other U.S. assets if the bill is passed.