View the videos on C-SPAN about the 9/11 bill
https://www.c-span.org/video/?415998-1/us-senate-approves-temporary-spending-bill
https://www.c-span.org/video/?415997-101/us-house-votes-override-911-lawsuit-bill-veto
Since they are rather lengthy you may want to skip ahead to some of the more important discussions. I would suggest you do a brief search of the facts regarding the bill when it was originally proposed, how did it pass the first time? Why did President Obama veto the bill? Why did Congress override the veto? Be sure you describe the relationship between the two branches of government.