Subject matter is the sort of thing that doesn’t make it onto the plate of non-lawyers, who properly assume that if they have an argument in support of their own defense, a court will hear and consider it. This makes perfect sense, so naturally the government has come up with a way to screw with it.
Via Eugene Volokh at WaPo Conspiracy, the 9th Circuit’s opinion in United States v. Szabo:
William J. Szabo was prosecuted for violating a Veterans Administration regulation banning “disturbances” at VA facilities. The panel unanimously found that the regulation was constitutional as applied to Szabo’s speech, “because his conduct involved a ‘true threat’ of violence.” But Szabo also claimed that the speech restriction was unconstitutionally overbroad — something that is generally allowed in First Amendment cases.
Yet the majority held that Szabo couldn’t bring this challenge, because a federal statute expressly provided that such regulations could only be challenged in the U.S. Court of Appeals for the Federal Circuit. Szabo was arguing that the regulation was unconstitutionally overbroad before the federal district court that tried him, and then before the Ninth Circuit; that, the court held, was impermissible. “‘[So long as] Congress provides for a ‘special statutory review proceeding’ in one specific court, challenges to the administrative action must take place in the designated forum.’”

