If the US lied they would never have an extradition request approved ever again, the treaty would in effect be null and void. The next case the defendants laywe

If the US lied they would never have an extradition request approved ever again, the treaty would in effect be null and void. The next case the defendants laywer would bring up this case and the judge would dismiss the extradition case and that not even considering the a huge diplomatic incident it would start. If the HS lied and forged paperwork relating to this many people getting are going to get dragged into court over it, get found guilty of crimes, get jail time, lawyers for the home office losing their licenses all over a single case over a single extradition...