They can’t just undo it but they can challenge it in court.
But you are right, in a way the FTC is appealing their own decision [1]. US politics can be quite mad at times.
[1] https://www.ftc.gov/news-events/news/press-releases/2012/08/...
But you are right, in a way the FTC is appealing their own decision [1]. US politics can be quite mad at times.
[1] https://www.ftc.gov/news-events/news/press-releases/2012/08/...
No question about the truth of that statement.
However, though the FTC approved the acquisition 10 years ago, the current FTC commissioners have evidently concluded that in the interim things have changed. Whether the court agrees with the FTC's logic remains to be seen.