Most of the members of the "freedom caucus" (or what some might call "MAGA extremists") are anti-mass surveillance. For example, here's a video [0] from a recent hearing on FISA abuse where Matt Gaetz questions the IG about the over 1,000,000 warrantless searches of Americans.
With tools such as these the intelligence agencies have dirt on every single person of power. CIA director kept meeting with Epstein. Guy who let people many people currently in power have their way with underage girls.
Who is not pro-mass surveillance? Because nobody did anything about the NSA unlawful spying of their citizens...