Probably ripped off the MO speech on purpose, hoping people would notice. In order to create some controversy and get people talking about the Trumps some more, so they can then bag on liberals and the media. Maybe I've giving the Trump campaign too much credit, but so far they've seemed to follow a pretty simple playbook that has worked amazingly well.
Step 1. Say/do something ridiculous or stupid or crazy.
Step 2. Watch all the politician and media spaz out about it.
Step 3. Reapply bronzer
Step 4. Bash the "dishonest liberal media", the "crooked establishment politicians" for 'hating'.
Step 5. Watch the American population side with you because they hate the media and Washington.
Rinse, wash, repeat. And in this case you get a bunch of people talking about Mrs. Trump in the same breath as Mrs Obama, which is a good thing.