… These are "negative rights," meaning that they proscribe others from inhibiting you from exercising your right but do not otherwise require active cooperation of others. Your right to free speech does not require others to help you breathe; it simply requires them to leave you alone …
But a positive right may require the support of others, if it’s truly a right, may in fact obligate others:
On the other hand, if health care is a right, that means that an American who for whatever reason does not have access to a doctor must be provided that access, whether that means redistributing taxpayer money to the would-be patient or even the potential of forcing a doctor to provide his services in an area "underserved" by health care professionals.
The problem with Obama's positive right formulation -- as with all positive rights -- is that one never knows where such a right ends, if or when such a right might be curtailed when it conflicts with citizens' other (usually negative) rights.