Ron Paul said:
"The concentration of power in the office of the President is yet one more negative consequence of our interventionist foreign policy.
A foreign policy based on interventionism requires a strong and energetic executive, unfettered by Constitutional niceties such as waiting for Congress to pass laws or declare war.
So it simply was natural, as America abandoned the traditional foreign policy of non-interventionism, for Presidents to act “without waiting for Congress.” After all, the President is “commander-in-chief” and he needs to protect “national security,” they argued.
Once it became accepted practice for the President to disregard Congress in foreign affairs, it was only a matter of time before Presidents would begin usurping Congressional authority in domestic matters."
Obama flip flopped.