No problem, it’s deceptively court-like with much less of the rigor and independence; Khalil and his team are right to call it a kangaroo court for such procedural reasons alone, whether or not he should be deportable under the law. At least he likely can appeal most or all of the case to the true federal courts - which is actually not always true; there are many situations where immigration law forbids judicial review or some or all of the immigration court’s findings, even when those findings may well be wrong.

I was slightly wrong about one unimportant detail: the immigration court system is under the DOJ and so the official with full control is the Attorney General (either herself or through her delegates/subordinates), not directly the President. But of course the President can fire the Attorney General and her politically appointed subordinates at will, so the effect is mostly the same.