Congress is killed. What happens?

[FairBol]

Though it seems pretty impossible, if both houses of congress was killed what happens? Seriously, in London that awful guy got pretty close to their congress. Whats to say something like that doesn't happen here. If that was to happen here and both houses were killed, what happens to the US? We can't possibly make laws before their re-elected. And if we do, it would be the executive branch taking over both powers. Making it able to just rule over the governmental level on federal grounds fully? Or do we just go without making new laws, without being able to declare war, or what ever other powers the congress holds for how ever long emergency elections take?

Not sure if you know this, but every year during the State of the Union Address, one Cabinet member stays behind in a secure location.  This is in case, God forbid, the unthinkable ever happens.  The selected member is known as the "designated survivor". 

The plan is that if Congress (during the speech) is ever destroyed by a catastrophic attack (and the president, VP, and Speaker of the House all killed, assumedly), this Cabinet member then automatically becomes the President of the United States.  As such, he gets the job of rebuilding the federal government.  The ABC US show "Designated Survivor" deals with one such scenario. 

[FairBol]

Though it seems pretty impossible, if both houses of congress was killed what happens? Seriously, in London that awful guy got pretty close to their congress. Whats to say something like that doesn't happen here. If that was to happen here and both houses were killed, what happens to the US? We can't possibly make laws before their re-elected. And if we do, it would be the executive branch taking over both powers. Making it able to just rule over the governmental level on federal grounds fully? Or do we just go without making new laws, without being able to declare war, or what ever other powers the congress holds for how ever long emergency elections take?

I'm unaware of any general contingency plan released to the public that addresses this.  What I do know about is the "State of the Union/Congressional Address" plan.  Every year, the president is constitutionally required to give an address on the state of the union.  Before doing this, the president usually names a "designated survivor".  This person's role is to stay behind, just in case the unthinkable happens.  The person named is usually a lower-level Cabinet official.  In case of an attack where Congress, the president, and the VP were all taken out, this "designated survivor" would automatically become President of the United States. 

[FairBol]

Wait, I answered this question before.  Never mind!

[FairBol]

Though it seems pretty impossible, if both houses of congress was killed what happens? Seriously, in London that awful guy got pretty close to their congress. Whats to say something like that doesn't happen here. If that was to happen here and both houses were killed, what happens to the US? We can't possibly make laws before their re-elected. And if we do, it would be the executive branch taking over both powers. Making it able to just rule over the governmental level on federal grounds fully? Or do we just go without making new laws, without being able to declare war, or what ever other powers the congress holds for how ever long emergency elections take?

In case of a catastrophic attack, for example? It's unclear to me what exactly would happen.  The feds apparently have "Contingency of Government" plans to deal with such a scenario, but they aren't public.  What is known about such plans is that during the SOTU address each year, one Cabinet member (usually a lower-ranking official) is selected by the president to stay behind, and watch the address from a secure location.  If an attack then took place taking out the entire Congress, that Cabinet member would automatically become President of the United States (the "designated survivor" plan).