[ASA Vet]

tried to get the illegals to testify against their employers, but that the illegals chose deportation rather than a plea bargain with testimony.

If not being deported was offered the federal prosecutor making the offer should be charged with aiding & abetting a criminal.
The only offer that should have been given to the invaders is a free flight home.

[DeaconBenjamin2]

Plea bargains in return for testimony against a preferred target are standard operating procedure. No court or ethics panel would view it as aiding and abetting a criminal.