NEW YORK (AP) — The star prosecution witness in Donald Trump’s hush money trial is set to take the stand with testimony that could help shape the outcome of the first criminal case against an American president. Michael Cohen, Trump’s former lawyer and personal fixer, is by far the most important witness in the case. And his expected appearance in court on Monday signals that the trial is entering its final stretch. Prosecutors say they may wrap up their presentation of evidence by the end of the week. Defense lawyers have teed up a bruising cross-examination of Cohen, telling jurors during opening statements that he is an “admitted liar” with an “obsession to get President Trump.”