Marco Rubio actually said...

"If this thing goes off the rails, if, in fact, it's used in a nefarious way, what leverage do we have to pull back on it?"

"I think that is a prudent course of action, to proceed cautiously and to go forward on a sort of test drive of this new process and make sure that it is operating effectively and as we think it's goin..."

"Hope is no substitute for rigorous empirical real-world testing."

"I honestly don't believe that proceeding cautiously on this is to our detriment, and I think that's fully understandable, given the scope of what we're talking about here."