The USD/CHF pair ran through fresh offers near 0.9900 handle and the downslide has gained momentum in the past few hour, dragging it to a fresh session low. Currently trading around 0.9855 region, the pair has now erased Monday's tepid recovery gains and has broken below Friday's swing low touched in the aftermath of news on FBI probe over Clinton's email. Today's better-than-expected release of Swiss manufacturing PMI and broad based greenback retracement could have contributed to pair's downslide on Tuesday. Moreover, possibilities of traders trimming their bullish USD bets, ahead of this week's key event risk, might be another factor exerting selling pressure around the major. Investors this week will remain focused on the Fed monetary policy decision and one of the most keenly watched US economic indicator - monthly jobs report, which would determine the pair's near-term trajectory. Later during NA session, traders will confront the release of US ISM manufacturing PMI and would be looked upon for short-term trading opportunities. A follow through selling pressure below 0.9843 (Oct. 20 low) is likely to accelerate the downslide towards 50-day SMA support near 0.9800 handle. On the upside, 0.9900 handle now become immediate hurdle, which if conquered might trigger a bout of short-covering rally immediately towards 0.9930-35 horizontal resistance.