The Swiss franc appreciated vis-à-vis the U.S. dollar today as the greenback tested bids around the CHF 1.0690 level and was capped around the CHF 1.0725 level.  As expected, Swiss National Bank kept its three-month Swiss franc Libor target rate unchanged at 0.2% today.  SNB reported 'The Swiss National Bank is maintaining its expansionary monetary policy. It will act decisively to prevent an excessive appreciation of the Swiss franc against the euro.  SNB is forecasting the Swiss economy will expand about 1.5% this year.  U.S. dollar offers are cited around the CHF 1.1045 level.  The euro moved higher vis-à-vis the Swiss franc as the single currency tested offers around the CHF 1.4630 level while the British pound moved higher and tested offers around the CHF 1.6120 level.