We work with FCC lab that provide us the FCC compliance. I get the requirements in form of document from our HW team, which is called FCC compliance document, so I call all those limitations FCC compliance limitations.
I for sure did not read all the documents that we need for safety compliance, and have no idea where they come from. I will try and check with HW team where this limitation is from.
Please do look it up. FCC regulations would deal with the things like harmonic emissions from the cables, which could be easily solved by a ferrite choke clamped on them.
In the past I've dealt with the fake/scummy/incompetent "electromagnetic compatibility" labs/inspectors, but never heard of one in Israel.
FCC is a fairly weak organization, as far as "the Feds" go. In the past some enterprising scammers even set up fake "RF emission labs" in an acoustic anechoic chamber that was sufficient to confuse inexperienced people and scam them out of payments for "expert evaluations" that were nearly worthless. In USA this is called "private enterprise" and "public/private partnership".
Edit: Are you by chance dealing with a remote "mail delivery only" lab in the USA, where nobody knowledgeable from your company ever visits the actual lab?