IS NOT!!!
Congress is merely lacking in testosterone!
If Obama should lose the election even with massive the inevitable vote fraud and recounting he can declare it fraudulent and order it rerun should he choose to do so. The Congress and the Court, given very recent acceptance of presidential usurpation, with Obama's man Roberts the swing vote in the Court, will accept that. He would then insure that the vote goes the "right" way.
At this point the only power that seems to remain to Congress is the power of the purse but with much of the provision in the Affordable Health Care law that begins to go away, too. Various entities are given the power by that law to appropriate money.
And if Obă does accept an election loss and steps down then Romney will have the Total Power and will not give it up. Indeed, he cannot give it up, he can only decline to use them. Once Congress has given it away it is given away, it is not lent.