"The president is without authority to negate the congressional will on this, and any attempt to do so will be invalidated by the courts." "By defining what an "occasional seller" is, the president is essentially interpreting the law, a job reserved for the courts."
The courts will ignore his interpretation, and impose their own.
As well, by requiring physicians to report conversations with their patients about guns to the Department of Homeland Security, the president will be encouraging our government to invade the patient/physician privilege.
"Finally, we still have a Constitution in America. Under the Constitution, Congress writes the laws, the president enforces them, and the courts interpret them".
President Obama can no more write his own laws or impose his own interpretations upon them than the Congress or the courts can command the military.
Andrew P. Napolitano, a former judge of the Superior Court of New Jersey, is the senior judicial analyst at Fox News Channel.