The Executive Order 3/24/10

It has been reported that Obama signed the promised Executive Order about abortion today.  He had to promise this signing to get Stupak and his friends to vote for the Health Care Bill.
There is only one fly in this ointment and that is the Executive Order is more than just likely, worthless.  An Executive Order cannot make a law or change a law.  It can direct the Executive Branch of government to do this or that.  Well that is what it is supposed to do.  Unless of course Obama would just ignore the Constitution, you know, that document he swore to preserve, protect and uphold to the best of his ability.
This also raises a few questions from me.
Is this to say that Stupak and others in congress, stood and took an oath to uphold the Constitution and does not know what's in it?  Does this also mean that Obama, knowingly pulled a slick move on Stupak and friends with the promise of a worthless order?  Or does it mean that Obama, a supposed Constitutional Lawyer, does not know the Constitution either?