People can't blame Melania for this. The fact that his campaign plagirized the First Lady's speech in 2008, and knew about it, is disgraceful. It's not her job to fact check. If the speech writer is not fired, then it is obvious that whomever wrote the speech is in Trump's trusted inner circle.
Forget about Trump the candidate, but Trump the man needs to stand up for his wife and accept responsibility for this.