I don't know, but if I recall correctly, the executive branch's job was to execute the law as written by the congress and approved by the President. The veto power was given as a check on the power of congress, not congress as a check on the president (which it is now).
It seems their job of the white house has shifted, from executing the law, to cheer leading the legislative process, witch-hunting, and opposing any view point that it disagrees with.
When the white house mass e-mails arguments for health care, unsolicited, which law are they executing?