I suspect Obama is nervous, because his political ambitions could be just as undone, were a conservative (note, I did *not* say “Republican”) congress were to be seated.
The conservatives could repeal his Obamacare program, his Obamacorps brown shirts, then they could systematically dismantle 50 years of bloated and unconstitutional government. The federal government could be reduced in size by 50%, Social Security could be “concluded”, by allowing in no new taxpayers, and refunding those who paid into the system with tax breaks, except for the destitute.
Medical care could be privatized, ending Medicare and Medicaid, and the vast majority of US military forces could return home, with only a few critical overseas assignments still in operation.
And the national debt could be renounced. This would end US government credit for 30 years, so the government would have a balanced budget, whether it liked it or not. It would also force the US to rebuild all those outsourced industries, which in turn would restore the US economy to a firm foundation.
I like the way you think..