On c), not just 1st amendment grounds. That's their secondary complaint. Their primary complaint is that the summons invoked a nonsensical justification, relate

On c), not just 1st amendment grounds. That's their secondary complaint. Their primary complaint is that the summons invoked a nonsensical justification, related to merchandise imports, for its lawful authority to make such a summons. This one: https://www.law.cornell.edu/uscode/text/19/1509 https://www.law.cornell.edu/uscode/text/19/1509