The Sensex is likely to open higher yet again backed by firm US markets, a sharp drop in crude oil and robust FII inflows. Further, positive news from the US that the Senate has cleared the US nuke deal should boost the market sentiment.However, the market is likely to witness sudden bouts of profit taking at every rise.After crossing, yesterday's congestion area of 13,500-13,520, the index displayed immense strength during the day, however, the index was not able to close above the level. The index is likely to face resistance around 13,555-13,570-13,585 levels, while on the downside the index may find support around 13,455-13,440-13,425 levels.