Why does illegal trade often flourish without formal enforcement, but sometimes fail? Why do illegal trade-reducing policies often fail? Why do States often appear to tolerate illegal trade? A model of trade with cops and robbers provides answers. `Safety in numbers' is a key element: the...

Intense US-China commercial rivalry is quantified in this paper with novel non-parametric relative resistance sufficient statistics. The accounting method minimizes the demand specification error variance in revealed resistances. China's manufacturing seller incidence falls (seller price rises)...