A weakening currency is probably aimed to boost exports.<p>I think in theory, say the US Dollar weakens, everything appears cheaper, exports increase.
US companies will then be able to employ more people within the country and thus improves employability and domestic consumption.<p>It makes us poor overall, if we consume imported products, travel internationally, and if the economic plan fails in which employability and domestic consumption does not increase. This can happen when other equally competitive countries counter by de-valuing their currency as well.