Marco Rubio actually said...
The next president of the United States is going to have eight years of a mess of a foreign policy to clean up. That's why it can't be Hillary Clinton and, quite frankly, that's why it can't be someone who simply has not shown the intellectual curiosity or the interest in learning about these very complicated issues; and Donald simply hasn't.
Context
Rubio argues that the next president must be knowledgeable about foreign policy, implying Trump lacks that knowledge.
03/02/2016