Well, look at what they did to Flynn. A 3 Star General who served in this nation's uniform for 33 years, even under enemy fire. While being fired on, he dove off a 30 foot cliff in Grenada in order to rescue a drowning sailor.There were apparently errors in the FISA warrants - but I've never heard they were "illegal".
Yeah...errors that would have gotten the requests denied had they been truthful.
"illegal" is a technical term.
Lying is moral one.
The people who falsified those requests were liars, hence they were immoral.
Eric Felten’s 2019 column on the FBI 302s may help us understand what is happening here: “Are Unrecorded FBI Interviews a G-Man’s License to Lie?”