That doesn't make any sense to me whatsoever. Trump has taken an anti-illegal immigrant stance and one with which I profoundly disagree but what do we expect him to do when he finds out that his wife of 11 years had some photographs taken 21 years ago when she didn't have a suitable work permit ?
If we expect him to suddenly change his policy that would make no sense. Even if he suddenly had a road to Damascus moment, it's still a policy that plays well to the GOP.
Expecting his to disown his wife is equally unrealistic. The events happened 10 years before their wedding and probably well before he knew her. He is not responsible for her actions at the time and IMO it's realistic to assume that he was unaware of them right up until the time when the story broke.
Are we instead just going to brand him a hypocrite because he's anti-illegal immigrant and yet he's married to someone who broke immigration rules ? That would only make sense if he knew at the time of his marriage that this was the case. That's like criticising someone who has a strong anti-drug stance if their spouse had been known to use drugs from time to time at college but had never told the candidate.