Re: I mean...
The forged document should not be that hard to trace back to source. Even in the US, contempt of court is taken very seriously. The lawyer who presented it could be disbarred and imprisoned if responsible. If not, s/he will have no hesitation throwing someone under the bus when her/his reputation is on the line. Who presented it to the lawyer? That person is either guilty or knows who it came from, and so on down the line. Considering the threat of court action, that should concentrate some minds right back the the guilty party. Everyone in that evidence chain needs to swear in front of the judge how and where they got that letter.