"Chilling effect" is a very real & recognized legal principle. When The Government™ shows up at your door with near-infinite persuasive & prosecutorial resources, with nods towards teams of heavily armed men and bureaucrats with crates of red tape, telling you in no uncertain terms YOU WILL DO X, and reminding you frequently that this very meeting itself constitutes a National Secret™, with clear and implied statements that while you may have legal alternatives the slightest contact with anything construed as illegal (starting with the reply "no") will bring all this power crashing down on your corporate & private life, one does tend to comply - regardless of likely after-the-fact "well you could have done this" conversations.

So it goes with many Constitutional rights. You can fight for your rights, but "fight" isn't some lofty abstract term, it's "cause serious damage to another while they do the same to you, until one of you is persuaded by harm & further threat thereof to give up."