Recently, S&P changed US economic outlook from positive to negative. This means risk may increase and that increase may reflect on future interest rates (especially if CPI reflects reality).
If US government spending and deficit are not decreased, US dollar will weaken further in the future. But, if US starts decreasing its deficit that means it will have less available resources for future economic growth, that depresses the economy and slows further. Austerity plan can be difficult do implement and that is why I think dollar value probably decreases further in the long term. Meantime corrections for USD can happen sometimes in the short term.
We already see how commodity prices are increasing and that may reflecting the possible USD devaluation, precious metals and generally all natural resource prices are skyrocketing.