It is important to limit a government's power because, unchecked, a government can impose laws
That is because Californian state law allows sales of Medical Marijuana, and they can't prove that the sales were illegal and that there were problematic things included because it's legal in the state.
Spain which was not on the gold standard did not have a substantial decline from 1929 to 1933 as the US,Germany and many other countries endured a Contraction.