It’s standards SOP for the FBI. Lying to an agent is a federal crime, one of the 3,000 violations in 51 volumes and 23,000 pages of federal code.
What you do is write questions where they will likely lie. Then you get them on the lie, not for an actual crime where anyone got hurt or was scammed etc. Of course it is OK if the agent lies or deceives. It is completely acceptable practice to lie to a suspect, but they can’t lie to the agent. The concept of an agent lying (Giglio) is only if they purger themselves in court.
Likewise, there is always the IRS. If all else fails, you can ALWAYS use the IRS to show there was a violation (The old Al Capone way). There is enough gray area to where it’s left to interpretation to where anyone can be targeted. If you stick the IRS on it, you can “allege” that something was done wrong by 100% of the pastors and priests in this nation.
You forms a “task force” i.e. local police, IRS, DEA, ATF, FBI, Federal Marshals, FTC, DHS, Social Security... and everyone looks at a target from their vantage point. You can almost always find something. The average American is in violation of three (3) or more laws every day by the time they get to work! If you want to get someone, you can. Especially today where you have no privacy anymore and everything is collected.
And then there is the enormous power of “surveillance” to gather info on anybody they want to get. FISA is just the tip of that iceberg.
As has been said before, if they will do this to a president imagine what they can do to you.
Congress is afraid to do anything to control this abuse because, well, they too are fearful this power will be used against them.