Marco Rubio actually said...

"To be clear, as we talk about this long-term goal of landing on Mars in 2030, I think what you're describing is that all the things that we are doing now in the interim all build upon each other."

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

"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."

"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."