North Korea has threatened to target the White House and the US mainland in the row over the cyber-attack against Sony.
The hack led to the comedy The Interview - about a plot to assassinate Kim Jong Un - being shelved.
President Obama has described the hacking as an act of "vandalism" by - and is considering putting North Korea back on its terror list.
The LA Times National Correspondent Robin Abcarian says the scandal has provoked outrage among the US public.
