Has Stephen Collins done anything to land him in jail?

He won't look like the hero. At the least, it's reckless endangerment. The fact that Bingham called his direct line at the end of the movie, won't help either. He didn't report Bingham and his involvement with him after Sonia's murder, therefore everything after looks like an attempt to coverup an assassination.

Yeah,he stole his name from the actor who played Reverend
Eric Camden on 7th Heaven!

I agree with OP. I was very confused when Russell Crowe said he had called police, like he had done something wrong. From their conversation I didnt think that Rusell thought that he had ordered her execution, just that he had not disclosed his relation with Bingham and his knowledge of Binghams being the killer. So I didnt understand Russell calling the cops on him. As far as I can tell he is under suspicion, but I dont really see why he would be guilty unless he lied and had really ordered her killed. After his reaction at her death and his crying, I am more likely to believe his story that he did not know Bingham would kill her.

Has Stephen Collins done anything to land him in jail?

[deleted]

How about 'Withholding Evidence'?
Plus the fact that the crazy killer friend of his is still out there killing people and reporting back to him.

The implication, based on Bingham's direct phone call to Collins ("finish what we started") and the fact that Collins gets arrested in the news account, is that Collins was lying and Bingham was NOT acting alone. If that's the case and he was acting under orders from Collins when he murdered Sonya, then Collins is guilty of murder. (Think about it: if he wasn't behind Sonya's murder, why would he have turned to Bingham, an Army-trained sniper, for the simple task of "observing" her and "reporting back"? I think the correct interpretation is that Collins, knowing Bingham's hatred of Pointcorp and Sonya's status as a mole, manipulated him into killing her, just as the whole film was basically about Collins manipulating an unwitting Cal into helping him cover it up by exploiting their friendship and Cal's guilt over his feelings for Collins' wife. Collins is a manipulator.)

If, however, you take the alternate view that Collins was telling Cal the truth and Bingham was simply unhinged, it gets more murky. A zealous prosecutor could try and make the case that Collins is still guilty of murder or manslaughter because it was reckless of him to unleash Bingham on Sonya (knowing Bingham was a nut and capable of killing her out of a perverse sense of loyalty). It would be a longshot but not impossible. Obstruction of justice would be a very strong possibility, depending on whether he made any affirmative misrepresentations to the police during the course of their investigation. Regardless, the taint of the whole affair would ruin his political career.

If you go by Bingham is following orders from Collins, then Collins knew Bingham was out killing people at his command and did nothing or said anything to the police. If you go by Bingham is a nut hearing voices, then it does get murkier and it makes you question if Bingham was talking to anyone at all when he was on the phone. Why destroy the phone if there are phone records of the call?

Either way, if I hire someone with sniper/black ops/paramilitary experience to follow another person and that person ends up dead, I can expect the police to come visit me post haste. On the high end it's accessory to murder and on the low end its obstruction of justice.