> [T]he defendant should be precluded from arguing or suggesting that the undercover technique the government used in the underlying investigation was improper.

Why not just say: "The defendant should be precluded from arguing he is innocent" while you're at it?

The prosecutors also want to prevent the discussion of the existence of the NSA, and a speech by Diane Feinstein.

It's best not to confuse juries with anything not favorable to the prosecution.