Asian currencies are merging against the dollar ahead of the US Federal Reserve's interest rate decision, the Wall Street Journal reports. The markets are pricing in a 90 percent chance of keeping interest rates on hold on Wednesday and an 80 percent chance of raising them in December. In morning trade on Tuesday, the dollar was down 0.2% at 1323.30 South Korean won at S$1.2805, while the Australian dollar was up 0.1% at US$0.7023.