The government made the liquids decision based upon evidence that terrorists were planning on using fairly easy to construct liquid bombs from readily available ingredients to blow up airplanes. Like this:

http://www.nbcnews.com/video/dateline/26727573#26723141

Do you really think that some federal judge is going to determine that your judgment that a liquid ban is unnecessary should be given precedence over the judgment of the federal agencies involved that it was necessary (because of the difficulty of liquid screening for these readily available ingredients)?

As I said, you're tilting at windmills if you think such a lawsuit has any chance in hell of success.