Interesting point. In regards to wiretaps <a href="https:&#x2F;&#x2F;www.privacyrights.org&#x2F;content&#x2F;wiretapping-and-eavesdropping-telephone-calls" rel="nofollow">https:&#x2F;&#x2F;www.privacyrights.org&#x2F;content&#x2F;wiretapping-and-eavesd...</a> seems to imply that no, Federal Agents when investigating are not bound by State law but by federal law:<p>---<p>Courts have held that the California law does not apply to wiretaps by federal agents authorized by a valid federal warrant. For example, federal agents may go to federal court and obtain a warrant to place a wiretap in California, even though state officials may be barred by state law from obtaining a wiretap under similar circumstances.<p>---<p>In general I suspect they cannot be prevented by local state laws from doing their jobs.