Marco Rubio actually said...

"I think we have to be cautious that not every other nation has the same view."

"I think this is really about enhancing our national security and we want to make sure that we don't jeopardize our national security."

"we have to be careful and realistic that we not somehow ascribe our motivations and our way of thinking to that of another nation that perhaps has different aims and goals for their space program."

"I'm just always concerned that somehow we ascribe to other countries the same motivations as we have for the space program and sometimes that those things don't add up."