What type of lawyer works on illegal government survalliance

Withou any more information, it is difficult to determine what type of case you are dealing with.  If the gov't is prosecuting you based on illegally obtained wiretaps, than a criminal defense lawyer needs to be retained to file motions to have the evidence suppressed.  If you are concerned about information obtained in an illegal wiretap and there is no criminal case against you, than you need to talk to a personal injury lawyer who can evaluate your case and determine whether the damages that you have suffered warrant a claim against the government. If you were a little more specific about the issues related to the "illegal surveillance," it would be helpful in determining your legal issue.