The Wright Amendment is a rule that affected the airports in Dallas, Texas.
You know how when you take a plane to go somewhere far away, you usually have to stop at another airport on the way? Well, the Wright Amendment said that if you were flying from the main airport in Dallas, you could only go to certain other airports that were close by, like in Texas or Oklahoma. This was to make sure that the smaller airports in those places didn't lose too much business to the big airport in Dallas.
People didn't always like this rule, because it meant that if they wanted to go somewhere far away, they had to fly to another city first and then switch planes. So, after a while, some of the rules were changed, and now people can fly to more places from the Dallas airport.